The human species has experienced a quick increase in size which leads to less genetic variability in humans as compared to another organism.
Native populations' genetic variety declines when they migrate further away from Africa, and bottlenecks during migration, which are situations where population size is momentarily reduced, are assumed to be the cause of this.
Evolutionary geneticists have now demonstrated that during two severe bottlenecks that occurred between 60,000 and 50,000 years ago as modern humans left Africa, a significant portion of our ancestors' genetic variation was lost.
The presence of more than two homologous chromosomes, polyploidy, population migration, homologous recombination or crossing over during meiosis, and mutations are a few potential causes of genetic variability in the population.
For more information on human evolution kindly visit on
https://brainly.com/question/4954916
#SPJ4
You may need scratch paper for this one. deafness in cocker spaniels is inherited. the allele for deafness (d) is recessive to the allele for hearing (d). two cocker spaniels that are heterozygous for hearing are mated together. what is the chance that a puppy will be deaf?
The chances that a puppy will be deaf is 25%.
The term "allele" refers to a gene's alternative form or versions. People inherit one allele for each autosomal gene from each parent, and the alleles are usually classified.
In genetics, heterozygous means having inherited different versions (alleles) of a genomic marker from each biological parent.
If they are both heterozygous, they have the Dd genotype. If you draw a punnet square Dd x Dd, you will get the following genotypes for the puppy: DD, Dd, Dd, dd.
Due to the fact that deafness is recessive, the puppy must be dd, which is 1/4 (25%).
To learn more about Alleles, here
https://brainly.com/question/7602134
#SPJ4
Harry investigated the effects of fizzy cola drink on his heart rate.First he measured his heart rate every minute for 5 minutes when sitting down. Then he drank some cola.He continued to measure his heart rate at regular intervals. This is a graph of his results.
Harry measure his heart rate every minute for 5 minutes before drinking his cola because Before he drank the cola, he wanted to be sure of what his resting heart rate was.
The graph demonstrates that Harry's heart rate rose continuously for 10 minutes following the cola consumption—it went from 69 to 86 beats per minute. It would reveal whether Harry's condition was impacted by the fizzed-up gas bubbles or a component of the cola composition, such as the heart rate.
Your heart rate can go up if you drink cola with caffeine. Sodas and other sugar-filled beverages dominate the American diet. Beyond the negative effects of regularly ingesting sugar-sweetened beverages, there is an additional risk associated with caffeine use: the possibility of experiencing uncomfortable heart palpitations.
CORRECT QUESTION:
Harry investigated the effects of fizzy cola drinks on his heart rate. First, he measured his heart rate every minute for 5 minutes when sitting down. Then he drank some cola. He continued to measure his heart rate at regular intervals. This is a graph of his results.
Why did Harry measure his heart rate every minute for 5 minutes before drinking his cola? What evidence is there in the graph to support his idea that cola affects his heart rate?
To learn more about Heart rate visit: https://brainly.com/question/1330695
#SPJ9
The birth of the study of human relations within business organizations can be traced to?.
The Hawthorne studies can be traced to the birth of the study of human relations within business organizations.
The Hawthorne investigations, which Elton Mayo and Fritz Roethlisberger carried out between 1924 and 1932, gave rise to the human relations movement. The Hawthorne Effect is when participants in an experiment try to alter or enhance their behavior only because it is being assessed or researched. In the late 1920s and early 1930s, Western Electric's facility in the Chicago suburb of Hawthorne conducted tests that led to the invention of the phrase.
Hawthorne studies were created to look at ways to boost employee productivity. According to the Hawthorne theory of management, employee productivity is also dependent on management's concern for their well-being and the pay they are paid.
Learn to know more about Hawthorne studies on
https://brainly.com/question/27969657
#SPJ4
What is a limitation of the model in representing the steps of transcription and translation?
which disorder results in decreased erythrocytes and platelets with changes in leukocytes and has clinical manifestations of pallor, fatigue, petechiae, purpura, bleeding, and fever?
Pallor, purpura, petechiae, increased risk of mucosal bleeding, increased risk of infection, and weariness due to pancytopenia are all signs of aplastic anaemia.
When the body ceases making enough new blood cells, aplastic anaemia develops. You get worn out and more vulnerable to infections and uncontrolled bleeding as a result of the disease. Aplastic anaemia is an uncommon and dangerous illness that can appear at any age.
The bone marrow, the sponge-like substance inside our bones, is where the stem cells in aplastic anaemia are damaged. The bone marrow's stem cells can be harmed by a variety of illnesses and ailments. As a result, less red blood cells, white blood cells, and platelets are produced by the bone marrow.
To learn more about mucosal bleeding, refer
https://brainly.com/question/6845758
#SPJ4
in which eukaryotic organelle are various macromolecules broken down and destroyed? group of answer choices endoplasmic reticulum the golgi apparatus
Eukaryotic organelles are various macromolecules broken down and destroyed in lysosomes.
What are lysosomes?The endomembrane system is a group of membranes and organelles in eukaryotic cells that works together to modify, package, and transport lipids and proteins. The endomembrаne system includes the nucleаr envelope, lysosomes, vesicles, the ER, аnd Golgi аppаrаtus, аs well аs the plаsmа membrаne.
The RER modifies proteins аnd synthesizes phospholipids used in cell membrаnes. The SER synthesizes cаrbohydrаtes, lipids, аnd steroid hormones; engаges in the detoxificаtion of medicаtions аnd poisons; аnd stores cаlcium ions. Sorting, tаgging, pаckаging, аnd distribution of lipids аnd proteins tаke plаce in the Golgi аppаrаtus. Lysosomes аre creаted by the budding of the membrаnes of the RER аnd Golgi. Lysosomes digest mаcromolecules, recycle worn-out orgаnelles, аnd destroy pаthogens.
Your question is incomplete, but most probably your full multiple choices were
a. lysosome
b. the Golgi apparatus
c. mitochondria
d. endoplasmic reticulum
Thus, the correct answer is A.
For more information about lysosomes refer to the link:
https://brainly.com/question/13386978
#SPJ4
On which day is the level of LH in the bloodstream at its highest? What event occurs immediately after this peak?
Answer:
LH reaches its highest concentration on day 13. This causes the follicle to burst, releasing the ovum, and the follicle begins to develop into a corpus luteum.
The level of LH in the bloodstream at its highest at the 14th day of the menstrual cycle. Ovulation takes place ta the 14th day of the month which does ovulation.
What is the full form of LH ?The full form of LH is leutinizing hormone.
Corpus luteum is formed at the 14th day of the cycle that is the matured graffian follicle when releases an ovum then the matured graffian follicle makes the structure called as the corpus luteum which is yellowish in color.
With the increase in LH, other hormones also peak up because the hormones have to be associated with the thickening of the uterus walls and the walls of uterus have to be thickened up so as to make the uterus fit for baby production.
Learn more about hormones in women at :
https://brainly.com/question/8595219
#SPJ6
The graph shows the progress of a chemical reaction with and without the presence of an enzyme. Analyze the data. Which statement accurately reflects what is shown in the graph? A. The presence of the enzyme decreases the activation energy. B. The presence of the enzyme decreases the change in free energy. C. The presence of the enzyme decreases the energy of the products. D. The presence of the enzyme prevents the reaction from progressing
The difference between reactions mediated or not by enzymes, is the speed at which they occur, and hence, the required activation energy. A) The presence of the enzyme decreases the activation energy.
What are enzymes?Enzymes are proteins with intracellular catalytic properties that accelerate different natural chemical reactions. These reactions occur naturally, but they are accelerated in the presence of the enzyme.
Enzymes are in charge of catalyzing cell metabolism. Since they are proteins, they need an accurate tridimensional structure to accomplish their function. There is a limited temperature and pH level at which they lose that structure and denaturalize.
Concerning the reaction, in the enzyme's presence and absence, the substrate and the product are the same.
The main difference is the activation energy required to carry out the reaction.
Let us remember that activation energy is the one required to create or break bonds between molecules. Usually, the higher the activation energy is, the slower the reaction occurs.
In the presence of the enzyme, the reaction needs a lower activation energy than in its absence.
Without the enzyme ⇒ higher activation energy ⇒ slower reaction With the enzyme ⇒ lower activation enegy ⇒ faster reaction
According to this framework, the correct option is A. The presence of the enzyme decreases the activation energy.
Note: Since I could not find the complete question, I will attach a graph showing the progress of a chemical reaction with and without the presence of an enzyme. This diagram should be the same as yours.
You can learn more about enzymes and activation energy at
https://brainly.com/question/15731725
#SPJ1
motion can be described through a change in___________
A speed
B distance
C Position
D time
Answer:
speed
Explanation:
biochemical oxygen demand (bod) is controlled by the concentration of choose one: a. heterotrophic microorganisms. b. multicellular organisms. c. autotrophic microorganisms. d. benthic microorganisms.
The quantity of multicellular organisms in an area determines the biochemical oxygen demand (bod).
Where do microorganisms live?Microbes are extremely little living entities that can't be seen with the human eye and are present all around us. In the air, on land, and in water, they exist. Millions of these germs, also known as microorganisms, reside inside the human body. While certain microorganisms make us ill, others are beneficial to our health.
Which of the following factors is the primary driver of an increase in the biochemical oxygen demand in aquatic environments?In order to respire and catabolize organic molecules, microbial heterotrophs need oxygen. These actions reduces the oxygen content of the aqueous body, raising its BOD.
To know more about microorganisms visit:-
https://brainly.com/question/6699104
#SPJ4
A researcher is examining a data set. She sums the total of all of the data points and then divides that value by the number of data points.
A. the standard deviation
B. the mode
C. the range
D. the mean
which color in the visible spectrum will cause the most plant growth and which will cause the least
According to appearances, Green had the least amount of plant growth, while Blue had the greatest.
According to Petronus's (2016), for photosynthesis to occur, a cellular component like the pigment must be present because it gives plants their colour and traps sunlight in the process. The light spectrum, which is employed in most virtual labs for experimentation, has a tendency to have both long and short waves that contain various colours. Chlorophyll helps the photosynthesizing plant capture both blue and red light, according to Couto. This study makes the assumption that if a plant were exposed to an endless supply of sunshine while wearing a blue light filter, it would grow to its largest feasible size. The text outlines the various hues in the light spectrum that are important for plant growth.
Learn more about Photosynthesis here
https://brainly.com/question/1388366
#SPJ4
after 6 rounds of pcr, a single double-stranded dna molecule would have become how many double-stranded copies?
DNA copies increase exponentially over time.
DNA molecules are created in total after "n" PCR cycles, which equals 2 square n..
Thus, 2 square 6= 64 is the total amount of DNA molecules generated after "6" PCR cycles.
What about DNA?The molecule found inside cells that carries the genetic material necessary for an organism to develop and perform.This data is often passed from one generation to the next thanks to DNA molecules.Humans and nearly all other species carry their genetic information in DNA, also mentioned as deoxyribonucleic acid.The DNA of a privateer is often found in almost all of their cells.Nucleotides are chemical building units that structure DNA.A phosphate group, a sugar group, and one of four different nitrogen bases make up these building components.Nucleotides are joined together into chains, with the phosphate and sugar groups switching places, to form strands of DNA.It contains information needed to form proteins, which are other big molecules.These instructions are dispersed throughout 46 lengthy structures called chromosomes that are found inside each of your cells.Numerous smaller pieces of DNA, mentioned as genes, structure these chromosomes.Today, DNA has three separate purposes: genetic, immunological, and structural, all of which differ greatly from one another and depend in different ways on the bases and the sugar phosphate backbone.DNA encodes the knowledge required to supply proteins, which is the main connection between DNA and proteins.DNA, however, isn't a protein.Long strands of nucleotides structure DNA.Learn more about DNA here:
https://brainly.com/question/19238665
#SPJ4
scientists studying the origin of life have accomplished which of the following steps? scientists studying the origin of life have accomplished which of the following steps? abiotic synthesis of rna 's bases ( a , c , g , u ) abiotic synthesis of protocells with self-replicating, catalytic rna formation of protocells that use dna to direct the polymerization of amino acids formation of vesicles that use rna as a template for dna synthesis
The steps achieved by scientists studying the origin of life are:
abiotic synthesis of RNA 's bases ( A, C, G, U ).abiotic synthesis of protocells with self-replicating, catalytic RNA.RNA is the Ribonucleic Acid. It contains a ribose sugar and the nitrogenous bases are: adenine, guanine, uracil and cytosine. There are two types of RNAs: the coding RNA and the non-coding RNA. m-RNA belongs to the category of coding RNA while r-RNA and t-RNA belongs to the category of non-coding RNAs.
Protocells are the self-organizing spherical ball of lipids that have the potential to give rise to life. It acts as the stepping stone for the origin of life.
To know more about protocells, here
brainly.com/question/1561301
#SPJ1
a eukaryotic cell has just started replicating its dna. what is a true statement about the cell? select all that apply. group of answer choices the cell is in the g2 stage of the cell cycle. near each origin of replication there are two replication forks. telomerase may be used to make sure that the lagging strand at the end of the chromosome is complete. ligase is being used to remove rna primers.
When eukaryotic cell has started replicating its DNA, then following are true: a)near each of the origin of replication there are two replication forks b)telomerase is used to make sure that the lagging strand in the end of chromosome is complete.
What happens when DNA starts replicating?Two replication forks are formed at the origin of the replication and they get extended in both directions as replication proceeds.
There are multiple origins of replication on the eukaryotic chromosome so that replication can occur simultaneously from other places in the genome.
Telomerase is large ribonucleoprotein complex responsible for progressive synthesis of telomeric DNA repeats at the 3′ ends of linear chromosomes, hence reversing the loss of DNA from each round of replication.
To know more about DNA replication, refer
https://brainly.com/question/14347138
#SPJ4
in a cotransduction experiment the alleles a , b , and c were studied. the allele a alone was transduced into an auxotroph 1750 times, b alone 1700 times, and c alone 1725 times. alleles a and b were both found 11 times, b and c 117 times, and a and c 15 times. what can you definitely conclude?
We can definitely conclude that genes b and c are more closely linked than a and b or a and c.
Define alleles?
Leading courses on genetics and evolution define a allele as a variant that has the same sequence of nucleotides at the same location on a lengthy DNA molecule.
A locus is the chromosomal or genomic location of a gene or any other genetic element, and alleles are different DNA sequences found at a locus.
An identical trait is determined by a pair of alleles, such as eye color, where one allele codes for black eyes and the other for brown eyes.
The genotype is made up of all the alleles that an organism possesses. The genotype of an organism is referred to as homozygous if a pair of alleles is comparable.
Therefore, we can definitely conclude that genes b and c are more closely linked than a and b or a and c.
To learn more about alleles
Here: https://brainly.com/question/3452155
#SPJ4
which of the following conclusions about the genetics of alcohol use disorders can be legitimately drawn from adoption studies?
Conclusions about the genetics of alcohol use disorders can be legitimately drawn from adoption studies that have suggested a genetic basis for AUD, and identification of the genetic risk variants has been challenging.
Even though thinking about crossing numerous approaches has recommended a hereditary premise for AUD, recognizable proof of the hereditary chance variations has been challenging.
A few promising comes about are rising from GWAS considers; in any case, bigger test sizes are required to move forward with GWAS comes about and determination.
As the field of hereditary qualities is quickly creating, entire genetics sequencing might before long gotten to be the unused standard of cross-examination of the qualities and neurobiological pathways which contribute to the complex phenotype of AUD.
This audit analyzes the hereditary underpinnings of Liquor Utilize Clutter (AUD), with an accentuation on GWAS approaches for recognizing hereditary hazard variations.
The foremost promising comes about related to AUD and alcohol-related phenotypes have included SNPs of the liquor digestion system qualities ADH and ALDH.
Learn more about alcohol use disorders at
https://brainly.com/question/16254294
#SPJ4
The ______ functional division of the nervous system transmits information from the viscera to the central nervous system.
The visceral functional division of the nervous system transmits information from the viscera to the central nervous system.
The afferent or sensory department transmits impulses from peripheral organs to the CNS. The efferent or motor department transmits impulses from the CNS out to the peripheral organs to purpose an impact or action.
The 2d principal department of the frightened system, the peripheral frightened system, consists of messages to and from the imperative frightened system. It includes all the nerve cells that aren't withinside the mind or spinal column. It is constituted of parts: the somatic and the autonomic frightened systems.
To learn more about central nervous system, click here:
https://brainly.com/question/15078430
#SPJ4
in general, lymphocytes a) spend most of their time in lymphatic tissue. b) have relatively short life spans. c) have two nuclei. d) are produced and mature only in red bone marrow. e) are located primarily in the blood stream.
Lymphocytes , in general: A) spend most of their time in lymphatic tissue. Hence option A) is the correct answer.
What are lymphocytes?Lymphocyte is a type of white blood cell in the immune system of vertebrates. Lymphocytes have natural killer cells, T cells and B cells. They are found in lymph, which prompted the name lymphocyte.
Lymphocytes make up up to 18% to 42% of circulating white blood cells.
If you have low numbers of lymphocytes , there is a higher risk of infection. Lymphopenia symptoms ranges from mild to serious and are correlated to the severity of the lymphopenia but some people show no symptoms.
To know more about lymphocytes, refer
https://brainly.com/question/1157802
#SPJ4
The two muscles that insert on the fifth phalanx or on the fifth metatarsal are the __________.
The two muscles that insert on the fifth phalanx or on the fifth metatarsal are the extensor digitorum longus and fibularis tertius.
Where is extensor digitorum longus located ?Extensor digitorum longus is located lateral to m. tibialis anterior in its proximal part and extensor hallucis longus distally. Its origin is on the tibia and interosseous membrane, inserts into the medial and distal phalanxes II-V digitorum, is innervated by fibular profundus. Which functions for dorsiflexion and abduction.The innervation of the ankle comes from the lumbar plexus and the sacral plexus. The muscle innervation that controls the movement of the ankle comes from the tibial nerve, deep fibular nerve and superficial fibular nerve. While the sensory nerves come from the sural nerve and saphenus.Learn about fifth phalanx here: brainly.com/question/9486955
#SPJ4
which change would not affect the relative rate of action of enzyme x
Answer:
b
Explanation:
Are Africanized honey bees a direct or indirect threat? Why?
Alien bee genus aid in pollination, but the Africanized honey bee is a danger to human health.
What are Africanized honey bees?The African honey bee is of native to most of the central and southern parts of Africa. Its sting is no more menacing than other bees, but it is unusual. It is much more aggressive as compared to other bees, with a propensity to pursue and send many attackers after any perceived threat. Africanized honey Bees are killer bees that are very dangerous because they attack intruders in much greater as compared than European Honey Bees. In Brazil, they have killed some 1,000 humans with victims receiving ten times as compared to the European bees.
So we can conclude that Honeybees help provides us with most of the food we eat, either straightly by pollinating food crops or indirectly by pollinating food sources consumed by domestic.
Learn more about African honeybees here: https://brainly.com/question/12668054
#SPJ1
if a mutation occurs on a segment of dna that codes for an enzyme, what is most likely to happen to the enzyme?
Answer:
it'll denature or reshape the enzyme
(remember enzymes are shaped specifically)
Compare the transport of glucose with the transport of fats and cholesterol in the body
Cholesterol is conveyed by complex particles is known as lipoproteins whereas Glucose transporter (GLUT) is a transport protein responsible for the transportation of glucose.
What transports cholesterol throughout the body?Cholesterol proceeds through the blood on proteins called “lipoproteins.” Two types of lipoproteins carry cholesterol all around the body: LDL (low-density lipoprotein) cholesterol, sometimes called “bad” cholesterol that makes up most of your body's cholesterol. Cholesterol.
This is transported by compound particles, called lipoproteins, which have specific proteins on their surface. These proteins, called apolipoproteins, have a crucial function in the metabolism of lipoproteins.
So we can conclude that Lipoproteins transport cholesterol and fatty acids throughout the body. Cholesterol is a major elector of every mammalian cell membrane.
Learn more about Cholesterol here: https://brainly.com/question/1260520
#SPJ1
These can occur when electricity ignites explosive gases in the air, such as pure oxygen, methane, or natural gas.
Answer:
These can occur when electricity ignites explosive gases in the air, such as pure oxygen, methane, or natural gas;Explosions
Explanation:
No explanation really needed hence the fact it says when electricity ignites explosive gases in the air.
Have a nice day^^
in the human life cycle a.meiosis produces haploid gametes, and fertilization creates a diploid cell that divides by mitosis to produce a new individual. b.mitosis produces haploid gametes, and fertilization creates a diploid cell that divides by meiosis to produce a new individual. c.diploid gametes reproduce by meiosis to produce haploid daughter cells that divide by mitosis to produce a new individual. d.diploid gametes reproduce by mitosis to produce diploid daughter cells that divide by meiosis to produce a new individual
Meiosis produces haploid gametes, and fertilization creates a diploid cell that divides by mitosis to produce a new individual.
Understanding meiosis
One method of cell division is meiosis. Reporting from the official website of the Ministry of Education and Culture of the Republic of Indonesia, meiotic division only occurs in the sex organs.
The function of Meiosis is to produce gametes (egg cells and sperm cells). This division produces daughter cells that have half the chromosomes of the parent cell.
The number of chromosomes possessed by daughter cells is n or is called haploid. Hence, meiotic cell division is referred to as reduction division.
Meiosis is a cell division thatthat produces 4 daughter cells, each of which has half the number of chromosomes of the parent cell.
And while body cells carry a total of 46 chromosomes, gamete cells only carry 23 chromosomes. A healthy young adult male will produce several hundred million gametes each day. In women, sex cells or ovum development follows a long process, starting in the fifth month after the woman is conceived. Meiosis begins at this stage, but stops at the egg precursor cell stage – or primary oocyte – during fetal development.
Learn more about meiosis at https://brainly.com/question/12327654.
#SPJ4
which stage of urine production involves the removal of substances from the bloodstream? question 18 options: a) reabsorption b) excretion c) filtration d) secretion
The elimination of chemicals from the circulation occurs during the stage of urine production known as filtering.
Which step in the creation of urine requires replenishing the bloodstream with water, nutrients, and electrolytes?The procedure in question is known as glomerular filtration. kidney tubules These small tubes reabsorb and release the necessary minerals, nutrients, and water for your body (including sodium and potassium).
Where does urination take place?As it travels through the nephrons and down the renal tubules of the kidney, urea, along with water and other waste products, creates the urine. both ureters. Urine passes through these small tubes from the kidneys to the bladder.
What three steps are involved in producing urine?The three steps of urine production are glomerular filtration, reabsorption, and secretion.
To know more about Urine Filtration visit:-
https://brainly.com/question/27390380
#SPJ4
HELPPP!!! Question 6 of 10 Which two statements describe examples of inferences used to draw scientific conclusions?
A. A cheetah has a speed of 33 m per second over short distances because the cheetah sprinted 330 m in 10 seconds.
B. T. rex must have been a carnivore because fossilized remains show teeth well-suited to biting and crushing bones.
C. It will rain this afternoon because the satellite images show increased cloud cover moving in this direction.
D. The population of black bears in a 100 km² area has increased from 14 to 18 in the past year.
Answer:
Determine which equation is false, based on the solution set S:{4}.
3t = 12
3m + 7 = 14
4(4c + 1) = 68
9 = 5p − 11
Explanation:
Answer:B and C
Explanation: inference is a guess based on reasoning, not numbers, using educated guesses is an inference. Finding out things with numbers isnt. So B and C are the answers
What is the product of performing a condensation reaction with three monosaccharides?
Relate How can the increased
demand on water affect water
quality
As more Organisms need water, The only clean source of water becomes scarce and finished, leaving only few clean pure sources of water, but much impure sources of water
