Fruit flies develop eye in the middle of a leg (c) When Ey gene is introduced into cells that would normally give rise to a leg, transcription regulators used to control its expression in leg are different from that of Ey expression in the eye.
What is transcription?Process of copying a segment of DNA into RNA is called transcription. The segments of DNA transcribed in RNA molecules that encode proteins produce mRNA. Other segments of DNA are copied in RNA molecules which is called non-coding RNAs. mRNA comprises of only 1–3% of the total RNA samples.
The goal of transcription is to make RNA copy of a DNA sequence of gene and for protein-coding gene, RNA transcript carries information needed to build a polypeptide.
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intervertebral discs comprised of fibrocartilage are found within what type of joints? multiple choice question. symphyses syndesmoses synchondroses sutures
Intervertebral discs comprised of fibrocartilage can be found at the symphyses.
Intervertebral discs are discs made of cartilage that function to prevent spinal structures from rubbing against each other and serve as cushions for the spine. Cartilage which is made of dense, clear, bluish-white and very strong material has two types of joints, one of which is the symphysis joint where the bones are connected by flat fibrocartilage discs which remain unhardened throughout life., for example, the intervertebral disc and pubic symphysis which join the pub part of the right and left vertebrae. For this reason, the symphysis joint is often referred to as a fibrocartilaginous joint.
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what would be the effect of swapping the dna-binding domain of a eukaryotic activator with a different dna-binding domain? multiple choice question.
The activator's ability to activate a target promoter is unaffected by the replacement of the DNA binding domain, which just changes the site at which it will function.
An activator protein binds to something, but what happens after it binds?The DNA regulatory sites close to the promoter regions, which function as on/off switches, are where activator proteins interact. This binding promotes the activity of the RNA polymerase and the transcription of adjacent genes.
How do activator proteins function in eukaryotic cells?Gene expression in a eukaryotic cell must be activated by transcriptional activators. RNA polymerase II can be drawn to the promoter or extended with the help of activators attached to the enhancer.
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suppose that the genetic code involved five nucleotides per codon but that there were only two different types of nucleotides. how many different codons would be possible?
Answer:
Explanation:
there would be 32 different types of codons would be possible
evolutionary theory is used in the real world for: group of answer choices guiding the thinking of computer scientists, but not for anything else. making professors feel good, but nothing else. fighting antibiotic resistance in diseases, but not for anything else. absolutely nothing. fighting diseases, and in other practical ways including guiding some techniques in computer science.
In the real world, evolution theory is employed for: A) Nothing at all. B) Trying to combat antibiotic resistance in illnesses but not elsewhere.
What are some examples of evidence for evolution?This section discusses five different sorts of evidence for evolution, including ancient organism remains, fossil layers, similarities between current-day animals, DNA similarities, and embryonic similarity.
What are the practical implications of comprehending evolution theories?The genes necessary to build different body parts can be found by understanding the changes that have taken place during organism evolution. These genes may also play a role in some genetic illnesses in humans.
What is the theory of evolution?Depending on the circumstances, different biological and behavioural approaches are Along with the organism's features like age, sex, health, or size, the environmental setting is also important.
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in a population of mustard plants, the gene that determines the height phenotype has two alleles. the allele for tall plants (t) is dominant to the allele for short plants (t). in the same population of plants, the gene for flower color also has two alleles. the allele for white color (w) is dominant to the allele for yellow color (w). a mustard plant that is homozygous dominant for both height and flower color is crossed with a mustard plant that is homozygous recessive for height and heterozygous for flower color. what are the possible genotypes of the offspring of this cross?
These crosses could result in genotypes with homozygous dominant, homozygous recessive, or heterozygous genes.
What is the genotype of this cross's progeny?The genetic makeup of the sex cells or gametes (ova and sperm) that were combined during conception to create an offspring determines its genotype. Each parent contributed one sex cell. Normal sex cells only have one copy of each gene for each characteristic.
How can the genotype of a test cross be determined?By examining the phenotypes of the offspring, the unknown genotype can be identified. If mating the unknown recessive phenotypic individual with the unknown dominant phenotype (PP or Pp genotype) results in solely dominant phenotypes (no recessive), then the unknown individual is homozygous dominant.
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two competing theories about the source of oxygen in photosynthesis were tested in the 1940s-50s using radioactive isotopes. about what did the theories disagree?
Theories that were obtained while doing research using radioactive isotopes disagree as to whether the [tex]O_{2}[/tex] produced during photosynthesis came from [tex]CO_{2}[/tex] (carbon dioxide) or [tex]H_{2}O[/tex] (water).
Most scientists believed that plants produced [tex]O_{2}[/tex] by removing it from [tex]CO_{2}[/tex] in the 1800s. In the 1950s, researchers tested this theory by tracking the fate of oxygen atoms during photosynthesis using the heavy oxygen isotope [tex]^{18}O[/tex].
There was two experiments:
1. A plant exposed to [tex]^{18}O[/tex]-containing carbon dioxide produced no labeled oxygen gas ([tex]^{18}O[/tex] containing).
2. A plant given [tex]^{18}O[/tex] water produced tagged [tex]O_{2}[/tex].
These investigations demonstrated that the [tex]O_{2}[/tex] produced during photosynthesis is derived from [tex]H_{2}O[/tex] rather than [tex]CO_{2}[/tex].
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PLSSS HELP IF YOU TURLY KNOW THISS
Answer:
C
Explanation:
Answer:
c) Herbivores
Explanation:
The consumer that only eats producers is called as herbivores. Therefore, the option (c) is the correct answer.
a(n) is a neuron that carries infromation from the external environment or from the body, back to the central nervous system
A sensory neuron is a neuron that carries information from the external environment or from the body, back to the central nervous system.
When you contact a hot surface with your fingertips, your sensory neurons will fire and transmit messages to the rest of your nervous system about the information they have just received. Sensory neurons are the nerve cells that are activated by sensory input from the environment. The brain obtains information from sensory neurons thus allowing us to sense, touch, see, smell. The brain interprets the information and sends the instruction back to the muscled using motor neurons and thus allowing us to act accordingly.
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When someone is having a blood test done to see if they are hiv-positive, what specifically is being looked for in the blood sample?.
When someone is having a blood test done to see if they are hiv-positive, the antibodies to the virus are specifically being looked for in the blood sample.
What are Antibodies?
This is referred to as immunoglobulin and they are protective proteins which are produced by the immune system. They normally attach to the antigens and use different mechanisms to eliminate or fight against it.
In the laboratory , blood test is done to see if they are hiv-positive and they look out for antibodies to the virus which depicts that it is present in the body system of the individual.
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when someone is having blood test done for hiv-positive. the test looks for both antibodies and antigen in the blood sample.
what are antibodies?
An antibodies is a blood protein produced in response to and counteracting a specific antigen. antibodies mixes chemically in the body with substances which the body recognizes as alien.
what is an antigen?
An antigen is a toxic substances which induces an immune response in the body.
In conclusion HIV antibodies are disease-fighting protein that the immune system makes when you have an HIV infection.
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Which of the following courses might a genetic engineer take in college?
O Introduction to Horticulture
O Principles of Plant Agriculture
O Maneuvering Controlled Vehicles
O Recombinant DNA Applications
The course that a genetic engineer might opt for in a college is: Recombinant DNA applications.
Genetic engineering is the branch of biological science that deals with the manipulation of the genetic composition of an organism in order to alter some traits in the organism. Recombinant DNA technology has various applications which are beneficial for the society.
Recombinant DNA technology can help the genetic engineer to determine which genes can be modified in plants as well as animals so as to create genetically modified organisms, which are superior in certain characteristics as compared to their ordinary counterparts. For example genetically modified plants are pest-resistant.
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in blood, antigens are termed: group of answer choices interleukins. cytokines. agglutinins. agglutinogens.
Agglutinogens are the antigens found in blood.
What are agglutinogens?
They are antigens and proteins that can be found on the surface of RBC’s, leading to formation of agglutinins, which are used for determining blood types. Agglutinins are antibodies. These antibodies react against agglutinogens.
For example, a person with A+ve blood type, the A cells have A agglutinogens on its surface. A person with B+ve blood type have B agglutinogens on cell surface, AB type have both A and B agglutinogens on surface of cell, whereas O type blood have neither A nor B agglutinogens on surface of cell.
Hence, agglutinogens are antigens found in blood.
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CAN SOMEONE HELP ME PLS!!!??:(
which new fossil find would favor the arboreal hypothesis for primate origins over the visual predation hypothesis?
According to the visual predation hypothesis, features of primates evolved as a result of their ability to hunt insects and other small animals.
What is hypothesis the meaning?In a scientific setting, a hypothesis (plural: hypothesis) is a tested claim regarding the connection between two or more factors or a suggested explanation for a phenomenon that has been observed.
What is an example of hypothesis?Several illustrations of basic hypotheses: In comparison to kids who skip breakfast, those who eat breakfast perform better on arithmetic exams. "Pupils who have test anxiety first before English exam do worst than the pupils who do not suffer from anxiety levels," complex.
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in an isotonic solution, the amount of solutes inside the cell is _____ to the amount of solutes inside the cell
Answer:
isotonic
Explanation:
PLSSS HELP IF YOU TURLY KNOW THISS
Answer:
It’s D
Explanation:
Answer:
d) Decomposer
Explanation:
Decomposer is the organism that digests the waste and remains of dead producers and consumers. Therefore, the option (d) is the correct answer.
fusion of an endocytic vesicle containing an enveloped virus with an endosome promotes uncoating because of
It’s because of the degradative enzymes and low pH inside the endosome.
What is an enveloped virus?
A virus which has an outer covering/envelope is considered an enveloped virus. This outer covering is formed during a process called budding off and the outer covering comes from the infected host cell. Newly created virus cells get enveloped in an outer coat, made of small piece of plasma membrane of cell during the budding process.
The vial genome is released inside host cell due to uncoating of the viral cell. During Uncoating, the capsid gets removed, thereby releasing the viral genome into host cells, after which gene replication and transcription takes place.
Hence, the uncoating of virus takes place due to degradative enzymes and low pH inside of the endosome.
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which lewis antigen(s) would be detected when phenotyping the red cells of an adult who has the le, se, and h genes?
Once the secretor (Se) genes is missing is the Lea antigen present upon that red blood cell membrane.
What are the 4 types of cells?Epithelial cells, which are closely bonded to one another, nerve impulses, which are specialized in communication, muscle cells, which are specialized in contraction, and connective tissue cells are the four primary cell types.
Where are cells found?Upon the earth, there really are living cells wherever unless it is sterile. If you run your hands along a smooth metal gate, you will likely find pollen, bacterial, fungal, and green algal cells (even wood is made up of dead plant cells).
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whose experimental findings were that second generation reappearance of characteristics present in one of the grandparents used in his studies demonstrated that inheritance was particulate and mixing did not alter genes?
Gregor Mendel findings demonstrated that inheritance was particulate and mixing did not alter genes.
Gregor Mendel, discovered the fundamental law of inheritance . He said the genes usually come in pairs and get inherited as unique units, as one from each parent. Mendel also state the law of segregation of parent gene and their appearance as dominant and recessive gene in offspring.
Mendel performed his experiment on pea plant ,Mendel developed three principles of inheritance that described the transmission of genetic traits. He performed this experiment by choosing seven different characteristic of pea plants .
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a child has a relatively large amount of brain tissue removed to control a seizure disorder. several years after the surgery, she has almost completely normal functioning. this is evidence of which quality of nervous system tissues?
In seizure disorders, electrical activity in the brain is periodically interrupted, resulting in some temporary impairment of brain function.
What in the brain causes seizures?Nerve cells (neurons) in the brain generate, send, and receive electrical impulses that allow nerve cells in the brain to communicate. Anything that interferes with these communication paths can lead to seizures. Genetic mutations may be the cause of some types of seizure disorders.In seizure disorder, the brain's electrical rhythms tend to become unbalanced, leading to recurrent seizures. In patients with seizures, normal electrical patterns are disrupted by sudden, synchronized bursts of electrical energy that can temporarily impair consciousness, movement, or sensation.Which parts of the brain are affected during a seizure?The temporal lobe is the area of the brain most likely to lead to seizures. The mesial (middle) portions of both temporal lobes are of great importance in epilepsy. It often causes seizures and is susceptible to damage and scarring.
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How can Base Substitutions, Deletions, and Insertions cause changes in DNA and possibly lead to new traits.
Base Substitutions, Deletions, and Insertions cause changes in DNA and possibly lead to new traits through mutation process
DNA is a dynamic and adaptable molecule and as such the nucleotide sequence found within it are subject to change as the result of a phenomenon called mutation and depending on how a particular mutation modifies an organism genetic makeup and it can prove harmless and helpful and sometime a mutation may even cause dramatic changes in the physiology of an affected organism and mutation can be grouped into two main categories based on where they occur and that are somatic mutation and germ line mutation
Base Substitutions : they involve the swamping of one nucleotide for another during DNA replicationDeletions : is the type mutation that involve the loss of one or more nucleotides from a segment of DNA Insertions : is the type of mutation that involves the addition of one or more nucleotides from a segment of DNAKnow more about Base Substitutions
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How are ecosystems started
Answer:
An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts. Biotic factors include plants, animals, and other organisms.
Create Your Own Pedigree:
Albert and Betty are married. They both have normal vision. They had 2 daughters and then a son.
Both daughters, Cassie & Debra, had normal vision and never had any children of their own. Their son,
Elliot, was colorblind. Elliot married Fallon who also had normal vision and they had 2 of their own children,
George and then Hailey. Hailey was colorblind but George was not.
Colorblindness is sex-linked recessive (X³). Use the letters X, Y or X² for the genotype. Draw the
pedigree below placing the genotypes for Albert, Betty, Elliott, Fallon and Hailey in their respective shapes.
a given signal needs to be sent to many different cells at many different locations throughout a multicellular organism. the type of signal best suited for this task is:
A hormone is the type of signal best suited for this task whenever a given signal needs to be sent to many different cells at many different locations throughout a multicellular organism.
By attaching to receptors on target cells, hormones differs cellular functions. A target cell's number of receptors may rise or fall in response to hormone action. Through intracellular or plasma membrane hormone receptors, hormones can directly or indirectly impact cells. A receptor can respond when a hormone or many hormones are present, which starts a cascade of signaling.
The hormone receptor interacts with several molecules to cause a range of changes, including an up-or down-regulation of nutrition sources, growth, and other metabolic processes. The steroid hormones activate cell signaling pathways that control certain genes in the DNA of the cell. By boosting or lowering the production of mRNA molecules, the hormone and receptor complex function as transcription regulators.
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Have you had the chance to watch a tree grow over a span of several years? Did you notice that the tree grew thicker and taller? Deep in the roots of the tree and high in the growing shoots are meristem cells. Each year, the meristem cells help the tree continue to grow. As a tree ages, it needs to keep making more xylem and phloem cells to carry water and food.
Which statement explains how this occurs?
A. Xylem and phloem from one part of the plant are transferred to another part.
B. The existing xylem and phloem divide to make more xylem and phloem.
C. Cell division is not necessary for a plant to create new xylem and phloem cells.
D. Meristem cells divide and some of the new cells differentiate into xylem and phloem.
Answer:
I think its D
Explanation:
hope this helpsss :)
in which form of reproduction does the offspring grow specifically from the stem or root of a plant? (1 point) responses
In asexual type of reproduction the offspring grow specifically from the stem or root of a plant.
New plants are created by asexual reproduction without the need for seed production. In this kind of asexual reproduction, the roots, stems, leaves, and buds are used to create new plants.
Asexual reproduction refers to a type of reproduction when a offspring is born to a single parent. The newly created people are clones of their parents since they have the same genetic makeup and physical characteristics. Both multicellular and unicellular organisms can reproduce asexually.
The full gene pool of their single parent is inherited by the offspring that are produced through asexual reproduction from either unicellular or multicellular organisms. The main method of reproduction for single-celled organisms like bacteria.
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Answer:
vegetive reproduction :)
Explanation:
DNA polymerase repairs mistakes made durring DNA replication true or false
Answer: True
Explanation:
DNA polymerases from many species, including bacteria, viruses and eukaryotes, possess a 3′–5′ proofreading exonuclease activity which removes misincorporated bases from extending primers, thereby improving fidelity.
What are the effects of fossil fuels in the in environment ?
Answer:
1. release large amounts of carbon dioxide
2. releases green house gas which traps heat into the atmosphere
3. air pollution/ global warming
4. can cause acid rain
Explanation:
A patient had symptoms that could be related to meningitis. The physician ordered a spinal tap for cerebrospinal fluid analysis. From which space a sample for analysis will be taken?.
Sample for analysis will be taken from two vertebrae in the lower spine for a spinal tap for cerebrospinal fluid analysis
The brain and spinal cord are surrounded by a clear, colorless, and watery fluid known as cerebrospinal fluid (CSF).central nervous system is made up of the brain and spinal cord. Everything you do, including your ability to move, breathe, think, and see, is controlled and coordinated by it.
brain and spinal cord are shielded from harm by the cerebrospinal fluid, which acts as a cushion. Additionally, the fluid aids in the proper functioning of your central nervous system by removing toxins from the brain.
A series of tests called a "CSF analysis" uses a sample of your cerebrospinal fluid to identify conditions that affect the central nervous system and diseases of the brain and spinal cord like Meningitis.
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you are interested in studying populations of moths in your backyard. you find some bombykol in the garage, and you spread it on some paper and hang the piece of paper on the tree. what would you expect to occur?
The expected scenario would be that only male silk moths would be attracted to the paper.
The female silkworm moth releases the pheromone bombykol to draw males to her. Additionally, the wild silk moth, Bombyx mandarina, uses it as its sex pheromone. When this pheromone is spread on to the paper, only male silk moths would get attracted to it to find their mates.
On an acre of land, tiny amounts of this pheromone can be used to fool male insects about where their female partners are. Thus, it can be used as a lure in traps to effectively remove insects without heavily spraying pesticides on the crops.
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The more the altitude increases in Earth's atmosphere how does the amount of oxygen and air pressure change?
Answer:The percentage of oxygen in the air is essentially the same as at sea level (21%). However, the air pressure is 30% lower at the higher altitude
Explanation:The percentage of oxygen in the air at two miles (3.2 km.) is essentially the same as at sea level (21%). However, the air pressure is 30% lower at the higher altitude due to the fact that the atmosphere is less dense--that is, the air molecules are farther apart.
