Answer:
true
Explanation:
in meiosis, homologous chromosomes are separated during . in meiosis, homologous chromosomes are separated during . prophase i telophase ii anaphase i anaphase ii
In meiosis, homologous chromosomes are separated during anaphase i.
Does meiosis separate homologous chromosomes?During meiosis I, homologous chromosomes separate into distinct nuclei, resulting in a decrease in ploidy level in the first division. Except for the fact that crossover causes the daughter cells' genomes to diverge, the second division of meiosis is more analogous to a mitotic division.
The nuclei enclose the chromosomes during telophase I. The cytoplasm of the original cell is now divided into two daughter cells through a process known as cytokinesis in the cell. Each daughter cell is haploid and has just one set of chromosomes, or half as many as the original cell's total number of chromosomes.
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Phosphorous is required to synthesize the deoxyribonucleoside triphosphates used in DNA replication. A geneticist grows some E. coli in a medium containing nonradioactive phosphorous for many generations. A sample of the bacteria is then transferred to a medium that contains a radioactive isotope of phosphorus (^32P). Samples of the bacteria are removed immediately after the transfer and after one and two rounds of replication. Assume that newly synthesized DNA contains ^32P and the original DNA contains nonradioactive phosphorous. What will be the distribution of radioactivity in the DNA of the bacteria in each sample? Immediately after the transfer After one round of replication After two rounds of replication If the gene for primase were mutated so that no functional primase was produced, what would be the effect on the two types of bacterial DNA replication? Theta replication Rolling circle replication
Either through conventional nucleoside triphosphorylation or through aqueous production of 2′-deoxyribonucleoside triphosphates (dNTPs).
Deoxyribonucleotides are produced in what ways?A purine or pyrimidine base is joined to deoxyribose, which is then joined to a phosphate group, to form deoxyribonucleotides. By reducing ribonucleoside diphosphates, they are created.
How does radioactive DNA become made?Sanger started synthesising new DNA strands from single-strand templates with the enzyme DNA polymerase while incorporating radioactive nucleotides into the new DNA. A primer that can bind to a recognised area of the template strand is necessary for DNA polymerase. Early success was constrained by the absence of appropriate primers.
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What does homozygous roan mean?.
Homozygous 100% of the children born to roan horses carry the genotype Rn/Rn.
An uniform distribution of colored and white hairs on the body distinguishes the horse coat color pattern known as roan, while the head and "points" lower legs, mane, and tail are predominately solid-colored. Roan horses have uniformly spaced white hairs mixed together with any other color. Less or none of the white hairs are present on the head, legs, mane, and tail. Numerous horse breeds have the roan pattern, which is inherited dominantly. Although the particular mutation that causes roan has not been discovered, a DNA test can be used to identify the zygosity for roan in various breeds. True roan is usually present at birth, though it might not be noticeable until the foal coat has shed. The coat may get lighter or darker as the seasons change.
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What is a special kind of stem cell and why is it special?.
Human stem cells are unique cells with the capacity to differentiate into a wide variety of cell types. This can range from muscle cells to brain cells. They can sometimes repair tissues that have been injured.
Human stem cells are unique cells with the capacity to differentiate into a wide variety of cell types. This can include everything from brain to muscle cells. They occasionally can also repair harmed tissues. Stem cell-based therapies may one day be used to cure severe ailments like paralysis and Alzheimer's disease, according to researchers.
various stem cell types
In general, there are two types of stem cells. Adult stem cells and embryonic stem cells are what they are.
stem cells from embryos. Currently unborn embryos are where the embryonic stem cells for research are derived from. These result from an in vitro fertilization process. They have been given to science. These pluripotent embryonic stem cells are. This implies that they have the ability to transform into various cell types.
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in the example provided in the narrative, assume that the f allele is dominant to the f allele. in this case, predict the phenotype of a cat with the genotype ff.
A genotype is a scoring of the sort of variant gift at a given area (i.e., a locus) within the genome. it may be represented by using symbols. for example, BB, Bb, and bb may be used to represent a given version of a gene.
The contrasting phrases genotype and phenotype are used to define the characteristics or trends of an organism. The genotype identifies the alleles related to an unmarried trait (e.g. Aa), or to some of the developments (e.g. Aa Bb cc). The term can be prolonged to refer to the entire set of genes of an organism (or a taxon).
The AA genotype has a pleasant compatibility ratio. A character with the AA genotype can pick out a lifestyle companion from sincerely all different genotype categories with an incredibly minimum possibility of sickle-celled offspring.
Genotype generally remains regular from one environment to another, even though occasional spontaneous mutations may additionally arise which cause it to trade. but, when the identical genotype is subjected to exceptional environments, it is able to produce a wide range of phenotypes.
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if a mouse with the genotype aadd is crossed with a mouse that has the genotype aadd what will the phenotypic ratios of the offspring be
The offspring's phenotypic ratio is 9: 3: 3: 1. Normal running speed is a dominant feature in mice. These mice are known as running mice (R). Mice only run in circles due to the recessive characteristic.
What does a mouse with the genotype AA look like phenotypically?Agouti mice are AA or Aa mice. Regardless of the phenotype at the second locus, mice with genotype aa are albino because all pigment formation is suppressed. The B allele (agouti coat) is dominant to the b allele at the second location (black coat).
What is the offspring's genotypic ratio?The ratio that represents the various genotypes of a test cross' offspring is called the genotypic ratio. It depicts the pattern of a family's progeny.
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a population of rabbits, introduced to an island, has rapid growth for a few years; then its growth slows. the population becomes stable because:
The population becomes stable because: the carrying capacity has reached.
What do you mean by Carrying Capacity?
Carrying capacity refers to the species' average population size in a particular habitat. It is limited by environmental factors like adequate food, shelter, water, and mates. If these needs are not met, the population will decrease until the resource rebounds.Four types of carrying capacity includes Physical, Ecological, Economic, and Social carrying capacities. It helps to determine the size of the population that can exist or will be tolerated there.To know more about Carrying capacity from the given link
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Part E: Write Your Paper
Write your research using your outline and the research you’ve collected. Be sure to proofread and revise your writing to catch any errors in grammar, spelling, logic, or cohesion. Remember that you must add a works cited page at the end of your paper to give credit to your sources.
When you have completed your paper, submit it to your teacher along with this activity.
Its a paper about cancer and way its cured(the lay out)
1. The chances and how common it is to get it.
2. Who will most likely get cancer.
3. The amount of people who've had it today and or will.
4. And things like injuries cause cancer.
PLEASE HELPPPPP
If it remains in complete remission for 5 years or more, it can usually be considered cured. Even so, some cancer cells can remain in the body for many years after treatment and cause the cancer to come back one day.
Abnormal cell development is caused by a defect in the DNA. These changes can be inherited from parents, pop up spontaneously or result from external agents such as cigarettes, viruses, excessive exposure to the sun, obesity and consumption of certain foods. These are the carcinogenic factors.
More than 10 million people die each year from cancer, WHO reveals
How does cancer form?Cancer arises from a genetic mutation, that is, from an alteration in the cell's DNA, which starts to receive wrong instructions for its activities. Changes can occur in special genes, called proto-oncogenes, which are initially inactive in normal cells.
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under anaerobic conditions, what carbon sources can be metabolized by yeast cells to produce atp from adp?
Glucose is the cause. A simple sugar, glucose has the atomic formula C6H12O6. It is the most important source of energy for cell respiration
The form of glucose that circulates in animal blood is glucose. It is created during photosynthesis, which uses sunlight to create it from carbon dioxide and water. Inside the yeast, glucose is the favored source of carbon and fermenting is the main pathway for energy generation, even under aerobic circumstances. It is the most important source of energy for cell respiration. Cells that are unable to generate enough energy via oxidative phosphorylation use anaerobic glycolysis as a substitute. Glycolysis generates 2 ATP in tissues with low oxygen levels by diverting pyruvate out from mitochondria and using the lactate dehydrogenase process. Because fermentation only employs glycolysis to make ATP, it only results in a net gain of 2 ATP.
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which of the following statements about termination is true? a)no trna can recognize a stop codon. it is recognized by a release factor protein. b)only a single release factor trna can recognize a stop codon. c)'ihere are three release factor trnas that can recognize a stop codon. d)no trna can recognize a stop codon. after the ribosome stalls on the mrna for a certain length of time, it falls oft and termination occurs. e)all trnas can recognize stop codons, and so the last amino acid of all newly formed proteins is random.
There is no known termination t RNA that can identify stop codons by their anticodon. This is believed to be done by the termination factors.
What is the termination of translation?Termination is the action that completes translation. A stop codon (UAA, UAG, or UGA) in the mRNA causes termination when it enters the A site. Release factors are proteins that perfectly fit into the P site (but aren't) and recognize stop codons.
A stop codon can be recognized by RNA?Stop codons cannot be recognize by a t RNA, hence they do not code for an amino acid. The two ribosomal subunits of the protein are released from the t RNA by proteins known as release factors, allowing them to be recycled separately.
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if a homozygous dominant and homozygous recessive couple mate, what is the % chance that they would have an offspring with a recessive phenotype?
If one parent is homozygous dominant (WW) and the other is homozygous recessive (ww), then all their offspring will be heterozygous (Ww) and possess a widow's peak.
What is phenotype?
"Phenotype" simply refers to an observable trait. "Pheno" simply means "observe" and comes from the same root as the word "phenomenon". And so it's an observable type of an organism, and it can refer to anything from a common trait, such as height or hair color, to presence or absence of a disease. Frequently, phenotypes are related and used--the term is used--to relate a difference in DNA sequence among individuals with a difference in trait, be it height or hair color, or disease, or what have you. But it's important to remember that phenotypes are equally, or even sometimes more greatly influenced by environmental effects than genetic effects. So a phenotype can be directly related to a genotype, but not necessarily. There's usually not a one-to-one correlation between a genotype and a phenotype. There are almost always environmental influences, such as what one eats, how much one exercises, how much one smokes, etc. All of those are environmental influences which will affect the phenotype as well.
If one parent is homozygous dominant (WW) and the other is homozygous recessive (ww), then all their offspring will be heterozygous (Ww) and possess a widow's peak. If both parents are heterozygous (Ww), there is a 75% chance that any one of their offspring will have a widow's peak.
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Arrange the following structures in order of how the CSF flows through the brain. The most superior structure should be listed first, and the most inferior structure should be listed last.Lateral ventricle->Interventricle foramina->Third ventricle->Cerebral aqueduct->Fourth Ventricle
The order of flow of CSF through the brain is as follows: Lateral ventricle → interventricular foramen → third ventricle → cerebral aqueduct → fourth ventricle.
What is CSF and what does it do?Cerebrospinal fluid is a clear, colorless fluid found in the tissues surrounding the brain and spinal cord of all vertebrates. CSF is produced by specialized ependymal cells in the choroid plexus of the ventricles and absorbed into arachnoid granules.CSF flows in and around the brain and spinal cord to protect against damage and provide nourishment.What is used to diagnose CSF?CSF may include diagnostic tests: Infections of the brain and spinal cord, including meningitis and encephalitis. A CSF test for infections looks for white blood cells, bacteria, and other substances in the cerebrospinal fluid. Autoimmune diseases such as Guillain-Barré syndrome and multiple sclerosis (MS).
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adenoids are enlarged a. lingual tonsils. 9 b. pharyngeal tonsils. c. palatine tonsils. d. cervical lymph nodes. e. axillary lymph nodes.
The correct answer is: Adenoids are enlarged pharyngeal tonsils.
The nasal cavity's entrance to the pharynx is close to where the pharyngeal tonsils are situated. These tonsils are known as adenoids when they expand to the point that they may obstruct breathing.
Adenoids are a tissue lump located behind the nose in the upper part of the neck. They are a component of the lymphatic system, just as tonsils. The lymphatic system eliminates infection and maintains the proper balance of bodily fluids. The tonsils and adenoids function by capturing germs that enter through the nose and mouth.
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sensory memory can be implemented by residual activation, and long-term memory can be implemented as changes in synaptic strengths, and working
The recollection of a sensory experience, such as what we just saw or heard, is only briefly remembered (approximately three seconds).
Some people liken sensory memory to a fleeting snapshot of the event you just had before it vanishes. The tiny window of time when you can recall information that you have just been exposed to is known as short-term memory. Depending on who is using the term, "short-term" might refer to anything from 30 seconds to a few days.
Even though the two overlap, some researchers refer to working memory as a separate concept from short-term memory.
The capacity of our brains to retain a finite amount of knowledge for usage over an extended period of time is known as working memory. Working memory facilitates the processing of ideas and plans as well as their execution. Working memory can be described as your short-term memory fusing tactics and information from your long-term memory bank to help with computation or decision-making.
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at certain times in the menstrual cycle, women demonstrate a preference for a mate that has the greatest degree of facial symmetry, facial masculinity, and a muscular physique. these demonstrate a male's degree of .reproductive fitnesspropinquityself-fulfilling prophecy familiarity
All these mentioned features demonstrate a male's degree of reproductive fitness.
What is reproductive fitness?The reproductive fitness or fertility reflects an individual's ability to pass on their genes to the next generation. Fitness traits, also called life history traits, are complex phenotypes that integrate measures of fertility and mortality and are direct targets of Darwinian selection. Each population evolves in a specific habitat to maximize fertility. Natural selection can cause microevolution (changes in allele frequency), making fitness-enhancing alleles more common in a population. Fitness is known to be a measure of reproductive success (how many offspring an organism leaves in the next generation)
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Path Of A Nerve Impulse
I Need to Fill In the Blanks
The telephone rings. Nerve impulses begin when in the ear picks up the stimulus of the telephone ringing
↓
The nerve impulse moves to __________ in the brain. The __________ interprets the impulses and decides to answer the phone.
↓
Nerve impulses from the brain move to __________. The muscles contract in response, and you pick up the telephone.
The telephone rings. Nerve impulses begin when the nerves in the ear picks up the stimulus of the telephone ringing.
The nerve impulse moves to neurons in the brain. The brain interprets the impulses and decides to answer the phone.
Nerve impulses from the brain move to arm muscle. The muscles contract in response, and you pick up the telephone.
What are nerve impulses?Nerve impulses are described as electrical signal that travels along a nerve fiber in response to a stimulus and serves to transmit a record of sensation from a receptor or an instruction to act to an effector.
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New individuals of a species are created by mixing genetic material from two parents in a process called.
New individuals of a species are created by mixing genetic material from two parents in process called sexual reproduction
What is sexual reproduction?
It is the creation of a new organism by combining the genetic material of two organisms.
As both parents contribute half of the new organism's genetic material, offspring will have traits of both parents, but will not be exactly like either parent.The gametes have an haploid genome (with a single set of chromosomes, product of a meiotic division) and combines with one another to produce zygote (diploid).Organisms that reproduce sexually by joining gametes, process known as fertilization, must have a mechanism to produce haploid gametes.learn more about sexual reproduction at - Brainly.com https://brainly.com/question/815744
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How are the enzymes that nerve cells produce different from the enzymes that blood cells produce?.
Enzymes that nerve cells produce are different from the enzymes that blood cells produce.
What are Enzymes?
Enzymes are proteins that act as catalysts in biochemical reactions, increasing the rate at which reactions occur. They are essential for most of the chemical reactions that occur in living organisms.
The enzymes that nerve cells produce are specialized to carry out the metabolic functions specific to nerve cells, such as energy production and the transmission of nerve signals. By contrast, the enzymes that blood cells produce are specialized to carry out the metabolic functions specific to blood cells, such as carrying oxygen and other nutrients, removing toxins, and forming clots.
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what is the name of the condition characterized by low energy availability, lack of menstrual periods, and low bone mineral density?
The menstrual disruption, poor energy availability (with or without an eating disorder), and decreased bone mineral density collectively are known as the female athlete trio (the triad), and it is rather frequent among young women who participate in sports.
Option (C) is the correct answer.
What three elements make up the female athlete triad?In 1992, the term "female athlete triad" was coined to describe a spectrum disorder with three interconnected components:
(1) Low energy availability due to disordered eating, eating disorders, or inadequate nutrition in relation to caloric expenditure;
(2) Menstrual dysfunction; and
(3) Low bone mineral density (BMD).
What is one of the female athlete triad's symptoms?Periods that are irregular or absent are indications of the female athlete triad. decrease of weight or a low BMI. tension fractures (tiny cracks in bones)
The female athlete triad syndrome includes what ailments?
1. Low Energy Availability With or Without an Eating Disorder in Female Athletes.
2. Dysfunctional menstruation & Low bone mineral density is third.
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I understand that the question you are looking for is:
what is the name of the condition characterized by low energy availability, lack of menstrual periods, and low bone mineral density?
A) Female anorexia
B) Female bulimia
C) Female athlete triad
D) Binge eating disorder
true or false? small, nonpolar molecules such as co2 and o2 can diffuse across a phospholipid bilayer by simple diffusion?
The given statement is true.
Small nonpolar molecules can easily traverse cell membranes because they are soluble in the lipid bilayer. Examples of these molecules are O2 and CO2 which can diffuse across a phospholipid bilayer by simple diffusion. Larger uncharged polar molecules, like glucose, cannot diffuse across cell membranes, but small uncharged polar molecules, like H2O, may diffuse across a phospholipid bilayer by simple diffusion.
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Fructose is a ketohexose monosaccharide found in honey, fruits, and other sources. It is also added to some foods and drinks as a sweetener. Much of the fructose taken in through digestion is taken up and processed by the liver, where it is phosphorylated and cleaved. Which of the following statements accurately describe(s) how fructose metabolism? Two products of the fructose 1 - phosphate pathway can enter glycolysis. The fructose 1 - phosphate gateway can deplete intracellular phosphate/ATP. Fructose enters a separate metabolic pathway from glucose, which enters the glycolytic pathway. The presence of fructose inhibits the entrance of glucose into glycolysis.
The statement that accurately describes how fructose metabolism is the one that says that the fructose 1-phosphate pathway can deplete intracellular phosphate/ATP.
Fructose metabolism is the metabolism of dietary fructose to yield energy from it. The difference between fructose metabolism and glucose is that glucose is metabolized directly throughout the body, while fructose is metabolized predominantly in the liver by the fructose 1-phosphate pathway. The phosphofructokinase reaction is bypassed and glycolysis can proceed without it.
The fructose 1-phosphate pathway is a derivative of fructose mainly generated by hepatic fructokinase. It can deplete intracellular phosphate or ATP.
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Is a turkey a reptile a bird a mammal an insect an amphibian or an aquatic animal.
Answer:
A turkey is a bird and is of two specie and it lay eggs
an infection with a lengthy period of infectivity will spread to fewer individuals than an infection with a very short duration of infectivity.
The capacity to cause or spread infection When sporozoites are cultured with serum from the shielded animals, their infectiousness is reduced, and the parasite's surface develops noticeable antibody deposits.
The ability of an infectious agent to spread disease from a sick person to a susceptible healthy person is known as infectiousness. The severity of an illness brought on by an infectious agent is gauged by its virulence.
The interplay of virulence factors with the host response frequently determines the clinical course of the disease. When the equilibrium between a pathogen's virulence and the host's resistance is upset, infection results.
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in both prokaryotes and eukaryotes, gene regulation most commonly occurs at the level of (fill the blank) initiation.
In both prokaryotes and eukaryotes, gene regulation most commonly occurs at the level of transcriptional initiation.
What are eukaryotes?Eukaryotes are the organism which have nucleus which is bound in a nucleus membrane. example All animals, plants, fungi are eukaryotes.
What is gene?Gene is a unit of information inside a living being. gene is also a basic unit of heredity. gene is transferred from parents to their off springs.
What is gene regulation?Gene regulation is the process or mechanism used by cells to increase or decrease the gene production of specific type of gene product.
Hence, In both prokaryotes and eukaryotes, gene regulation most commonly occurs at the level of transcriptional initiation.
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which is least affected by chemical weathering?(1 point) responses a chair made of plastic a chair made of plastic a pile of tiles made of feldspar a pile of tiles made of feldspar a statue made of marble a statue made of marble a bridge made of iron rods
The object that will be the least to be affected by chemical weathering is a pile of tiles made of feldspar .
What is chemical weathering?Chemical weathering can be described as the process which involves the interaction of rock with mineral solutions which is been regarded as a chemicals to alter the composition of rocks.
It should be noted that this process, involves the interaction of water with minerals so as to form various chemical reactions resulting in the transformation the rocks, in the case above the pile of tiles made of feldspar posses a strong chemical composition hence it will be the one that will be affected least.
Therefore, option C is correct.
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the change in acth levels in response to cortex causes a(n) in glucocorticoid secretions from the adrenal .
Cortisol and androgens are released by the adrenal cortex in response to ACTH. A negative feedback mechanism is provided by the rise in cortisol to lessen the quantity of CRH secreted by the hypothalamus.
What occurs if ACTH is elevated?Having an elevated level of ACTH might mean: Insufficient cortisol production by the adrenal glands (Addison disease) inadequate hormone production by the adrenal glands (congenital adrenal hyperplasia)
The anterior pituitary gland produces a hormone called adrenocorticotropic hormone (ACTH), which largely influences the production of glucocorticoids and adrenal androgens by the adrenal gland and, to a much lesser extent, also promotes the release of aldosterone.
Your adrenal glands, especially your adrenal cortex, are then stimulated by ACTH to produce cortisol and androgens. Your hypothalamus responds to the resultant rise in cortisol by lowering CRH levels, closing the feedback loop.
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What are the 4 genes in DNA?.
Adenine (A), guanine (G), cytosine (C), and thymine (C) are the four chemical bases genes that make up the code that stores the information in DNA.
Humans and nearly all other species carry their genetic information in DNA, also known as deoxyribonucleic acid. The DNA of an individual can be found in almost all of their cells. The majority of DNA is found in the cell nucleus (where it is known as nuclear DNA), but there is also a tiny quantity of DNA in the mitochondria (where it is called mitochondrial DNA or mtDNA). Cellular organelles called mitochondria transform the energy from food into a form that can be utilized by cells.Adenine (A), guanine (G), cytosine (C), and thymine (C) are the four chemical bases genes that make up the code that stores the information in DNA (T). More than 99 percent of the 3 billion bases that make up human DNA are the same in every person.
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what is the definition to hydrodynamic
Answer:the branch of science concerned with forces acting on or exerted by fluids ( especially liquids)
Answer:
hy·dro·dy·nam·ics -iks.
a branch of physics that deals with the motion of fluids and the forces acting on solid bodies immersed in fluids and in motion relative to them compare hydrostatics.
velma, thelma, and sonia indicate that they feel much younger than their actual age. research shows that midlife adults who view themselves as younger than their chronological age tend to .
Research shows that midlife adults who view themselves as younger than their chronological age tend to score higher on measures of well-being.
People who consider themselves to be younger than their actual age take care of their mental as well as physical well-being. These midlife adults feel younger and hence are not stressed. They maintain well-being by indulging in acts that make them feel younger.
On the other hand, people that feel old in midlife, tend to stop enjoying life and live a life of feeling old. They do not care of their well-being and remain sad and do not indulge in physical activities. Hence, their well-being score is not high.
The question will correctly be written as:
Fill in the blank
Velma, Thelma, and Sonia indicate that they feel much younger than their actual age. research shows that midlife adults who view themselves as younger than their chronological age tend to .................
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what concentration of dnase in the experiment performed by markus noll is most useful in establishing the nucleosome hypothesis proposed by roger kornberg?
MNase digestion of chromatin digestion is much slower than protein-free DNA digestion and most useful in establishing the nucleosome hypothesis proposed by roger Kornberg.
digestion of chromatin goes through several stages, each of which involves metastable intermediates that are stabilized by bound histones. Endo nucleolytic cleavage of the linker DNA between nucleosomes occurs first, resulting in the distinctive "ladder" pattern. Nucleosome positioning has been the subject of intense study for many years. The properties of micrococcal nuclease, the enzyme central to these studies, are discussed. The various methods used to determine nucleosome positions in vitro and in vivo are reviewed critically. These include the traditional low-resolution method of indirect end-labelling, high resolution methods such as primer extension, monomer extension and nucleosome sequencing, and the high throughput methods for genome-wide analysis (microarray hybridization and parallel sequencing).
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