The post-translational level refers to the ultimate phase of gene expression where a protein is made.
The stability, degradation, and functionality of the protein are significantly influenced by this level. The structure and function of a protein are significantly impacted by this covalent modification.
Post-translational modifications (PTMs) are changes made to a protein after it has been cleaved by a proteolytic enzyme and one or more amino acids have been added to a modifying group, such as acetyl, phosphoryl, glycosyl, or methyl.
Protein glycosylation, one of the most significant post-translational alterations of proteins, has a significant effect on protein folding, shape, distribution, stability, and function. Therefore, proteins can behave differently as a result of post-translational changes.
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7. how do variations in the anatomical part affect contrast?
Variations in the anatomical part can affect contrast in several ways. As the part size increases, so does the number of attenuation increases, as well as the production of scatter radiation. This results in a loss of contrast.
X-ray is a quick medical procedure used to produce images of the insides of the body. Here are several ways that anatomical parts can affect the contrast in the pictures x-ray produce:
First, different tissues have different densities, which can affect how much x-ray radiation is absorbed and how much is transmitted through the body. This can result in differences in contrast between different parts of the body.
Second, the size and shape of the anatomical part can also affect contrast. Larger or thicker parts may absorb more radiation, resulting in less contrast, while smaller or thinner parts may absorb less radiation, resulting in greater contrast.
Finally, the presence of contrast agents, such as iodine or barium, can also affect contrast by increasing the absorption of x-ray radiation in certain areas of the body.
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Collecting vessels are formed by the uniting or convergence of several lymphatic ___- capillaries- respiratory pump- skeletal muscle pump- valves
Collecting vessels are formed by the convergence of several lymphatic capillaries, which are small, thin-walled vessels that are found in most tissues throughout the body.
Lymphatic capillaries are made up of overlapping endothelial cells that allow for the entry of interstitial fluid, along with any foreign particles or microorganisms present in the fluid, into the lymphatic system. These capillaries then converge to form larger lymphatic vessels, which ultimately lead to the lymph nodes and lymphatic ducts. The collecting vessels function to transport lymphatic fluid, which contains immune cells and waste products, away from the tissues and toward the circulatory system for eventual elimination from the body.
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select the characteristics exhibited by glycocalyx of eukaryotic cells, check all that apply.
-outermost surface cells
-composed of protein
-composed of polysaccharides
-means of adhering to other cells
-means of locomotion
-signal reception
A) Hydrophobic nature: The glycocalyx of eukaryotic cells is composed of polysaccharides and proteins that have hydrophobic properties.
What is hydrophobic ?Hydrophobia is a fear of water. It is a type of specific phobia, which is an irrational fear of a specific object or situation. Hydrophobic reactions are also seen in some chemical compounds, which are repelled by water. These compounds are known as hydrophobic molecules and are a type of amphiphilic molecules which contain both hydrophobic and hydrophilic parts. These molecules form a protective coating when they come into contact with water, which helps them to repel the water and make it difficult for the water to interact with the molecule.
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I need help writing a short essay. I will give Brainleist !!! Paragraph 1 - Explain biodiversity and its importance.
Paragraph 2- Use one real life example of each of the 4 ecosystem services. They are provisioning, regulating, cultural
and supporting services.
Paragraph 3 - Describe genetic diversity, species diversity and ecosystem diversity are each important for maintaining
healthy biodiversity.
Answer: Biodiversity refers to the variety of life on Earth and encompasses genetic diversity, species diversity, and ecosystem diversity. It is important because it supports the functioning of ecosystems and provides numerous benefits to human societies.
Explanation:
Biodiversity refers to the variety of life on Earth and encompasses genetic diversity, species diversity, and ecosystem diversity. It is important because it supports the functioning of ecosystems and provides numerous benefits to human societies.
One example of provisioning services is the production of food. Agriculture and aquaculture systems, for example, rely on biodiversity to provide crops and fish for human consumption. Regulating services include the role of wetlands in filtering pollutants and the role of forests in regulating water cycles. Cultural services are the non-material benefits that people obtain from biodiversity, such as recreation, aesthetic enjoyment, and spiritual fulfillment. An example of cultural services is birdwatching, which brings millions of tourists and millions of dollars to many countries each year. Supporting services are the basic processes that underlie all other ecosystem services, such as nutrient cycling, soil formation, and primary production. An example of supporting services is the role of microbes in breaking down dead organic matter and releasing nutrients back into the soil.
Genetic diversity refers to the variety of genes within a species, species diversity refers to the variety of species within an ecosystem, and ecosystem diversity refers to the variety of ecosystems within a region. Each of these components is important for maintaining healthy biodiversity because they provide a buffer against environmental change and help ensure the survival of species in the face of unpredictable events. For example, genetic diversity allows species to adapt to new conditions and increases their chances of survival. Species diversity provides ecosystems with resilience and stability, while ecosystem diversity helps to ensure that a variety of important ecosystem services are maintained over time.
In conclusion, biodiversity is important because it supports the functioning of ecosystems and provides numerous benefits to human societies. Maintaining healthy levels of genetic, species, and ecosystem diversity is crucial for ensuring the continued provision of important ecosystem services.
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in 2009, researchers conducted necropsies (dissections of dead organisms to determine the possible cause of death) of 117 dead bats. there was microscopic evidence of fungal infection in 105 of the bats. what conclusions could you draw from this information?
We can conclude that a large majority of the dead bats showed evidence of fungal infection.
Specifically, 105 out of 117 bats had microscopic evidence of fungal infection. This suggests that fungal infection may be a significant contributing factor to the deaths of these bats. Further investigation may be needed to identify the specific type of fungus causing the infections and to determine the underlying reasons for the outbreak. It is also possible that other factors may be contributing to the deaths of these bats, and additional research may be needed to identify and understand these factors. From the given information, we can conclude that a large majority of the dead bats showed evidence of fungal infection. Specifically, 105 out of 117 bats had microscopic evidence of fungal infection.
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What are the small openings in the leaves called?
Tiny openings in leaves called stomata. Guard cells control the opening and closing of stomata. Plants release water vapor into the atmosphere when stomata open to allow gases to pass over the leaf surface.
What are stomata and their functions?Stomata are epithelial cellular structures in tree leaves and needles that support plant growth and exchange carbon dioxide and water with the environment.
How do stomata open and close?It is surrounded by two guard cells that control the opening and closing of the stomata. Stomata are open during the day for gas exchange and release of water vapor during transpiration. Stomata open and close due to changes in the turgor pressure of guard cells.
Why do plants need stomata?This evolutionary innovation is so central to plant identity that nearly all land plants use the same stomata to take in carbon dioxide and release oxygen. Stomata are very small, microscopic, and important for photosynthesis.
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in a hypothetical embryo, a high concentration of a morphogen called morpho is needed to activate gene p; gene q is active at or above medium concentrations of morpho; and gene r is expressed so long as any quantity of morpho is present. a different morphogen, called phogen, activates gene s and inactivates gene q when at medium to high concentrations. if morpho is produced in the anterior end of the embryo and phogen is produced in the posterior end of this embryo, which genes will be expressed in the middle region of the embryo? (assume a gradient of morphogen concentrations in three regions, from high at the source, to medium in the middle, and to low at the opposite end.)
If morpho and phogen are diffusing from where they are produced at the opposite ends of the embryo, the genes that will be expressed in region 2 of this embryo are Genes R and S (D).
Based on the information provided, we can infer that the concentration of morpho and phogen varies along the length of the embryo, with high concentration at the source and low concentration at the opposite end. In region 2 of the embryo, the concentration of morpho is at a medium level, which is sufficient to activate gene Q but not gene P. At the same time, the concentration of phogen is also at a medium level, which will inactivate gene Q but activate gene S. Therefore, in region 2, genes Q and S will be expressed, while genes P and R will not be expressed. Therefore, the correct answer is (d) genes R and S
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The given question is incomplete. The complete question is as follows:
In this hypothetical embryo, a high concentration of a morphogen called morpho is needed to activate gene P ; gene Q is active at medium concentrations of morpho or above; and gene R is expressed as long as there is any quantity of morpho present. A different morphogen called phogen has the following effects: activates gene S and inactivates gene Q when at medium to high concentrations. If morpho and phogen are diffusing from where they are produced at the opposite ends of the embryo, which genes will be expressed in region 2 of this embryo? (Assume diffusion through the three regions from high at source to medium in the middle to low concentration at the opposite end.)
a. genes P, Q, R, and S
b. genes P, Q, and R
c. genes Q and R
d. genes R and S
e. gene R
Which characteristic of a planet indicates whether the planet is made of solid rock or gas?
Atmosphere
O Presence of moons
O Presence of rings
O Surface composition
Answer:Surface composition
Explanation:The surface composition of a planet will tell you what the planet is composed of. Solid rock planets are able to have rings and moons if their gravitational pull is strong enough, therefore the only correct answer is surface composition.
Answer:
So the answer is: O Surface composition
Explanation:
The surface composition of a planet indicates whether the planet is made of solid rock or gas. If a planet has a solid surface, it is likely composed of solid rock. If a planet does not have a solid surface, it is likely composed of gas.
The presence of moons, the presence of rings, and the atmosphere of a planet do not necessarily indicate the composition of the planet, so those options are not correct.
So the answer is: O Surface composition
What ion enters a neuron causing depolarization of the cell membrane? a. sodium b. chloride c. potassium d. phosphate.
When voltage-gated sodium channels open, positively charged sodium ions flood into a neuron, resulting in depolarization. The correct option to this question is A
Depolarisation Different ions that pass the neuron membrane result in action potentials. Sodium channels first open in response to a stimuli. Because the inside of the neuron is negative in comparison to the exterior and there are much more sodium ions on the inside, sodium ions rush within the cell.The entry of sodium and calcium ions, which happens as a result of membrane channels opening, causes the depolarization.A sharp increase in membrane potential that opens sodium channels in the cellular membrane and causes a significant influx of sodium ions causes depolarization.For more information on action potential kindly visit to
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Select the correct answer.
Sonar stands for *sound navigation and ranging." what assumption was proved wrong after the invention of sonar?
O A.
The age of the ocean floor is variable.
O B.
The ocean floor is featureless. iS
• C.
The ocean floor is changing.
• D.
The ocean floor is denser than continental crust.
The correct answer is B. The ocean floor is featureless. The invention of sonar proved this assumption to be wrong as sonar technology allows for mapping of the ocean floor and has revealed that it is not featureless but rather has a complex topography with mountains, valleys, and other features.
Does increased sympathetic stimulation cause vasodilation?
On the other hand, elevating the metabolic rate of muscle fibers results in vasodilation.
What does vasodilation do to the body?Vasodilation is a method for improving blood flow to body parts that are deficient in oxygen and/or nutrients. This fall in blood pressure is brought on by the vasodilation, which increases blood flow and decreases systemic vascular resistance (SVR).
What is an example of vasodilation?Among the most typical are: Vasodilation makes it possible for more nutrients and oxygen to reach the muscle during exercise. Alcohol: Alcohol naturally dilates blood vessels. Alcohol-induced vasodilation can cause some persons to feel heated or have face skin flush.
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How do these two selections contribute to the effectiveness of the author's exposition?
(A)They present and address counterclaims about the purpose and function of homeostasis.
(B)They contrast homeostasis with other common processes in the human body.
(C)They provide evidence that ideas about homeostasis have evolved over the last century.
(D)They suggest that early ideas about homeostasis were significantly flawed.
The question does not have the article on homeostasis so as to make the inference.
What is homeostasis?Homeostasis is the maintenance of a stable internal environment within an organism despite external changes. It is the regulation and balance of various physiological processes to keep the body in a steady state. The human body has many systems and mechanisms that work together to maintain homeostasis, such as the nervous system, endocrine system, and immune system.
For example, the body maintains a constant internal temperature through processes like sweating and shivering, and it regulates blood sugar levels through insulin and glucagon. Homeostasis is essential for the proper functioning of the body and overall health, and disruptions in homeostasis can lead to illness and disease.
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What do atypical glandular cells mean?
Answer:
Is a term that has been used to describe abnormal cells that come from glands in the walls of the cervix
for many years microbial geneticists focused almost exclusively on the regulation of transcription initiation. a likely reason for this is
For many years, microbial geneticists focused almost exclusively on the regulation of transcription initiation because it is a crucial step in gene expression and is responsible for controlling the amount of mRNA that is produced from a gene.
Transcription initiation is the process by which RNA polymerase binds to the promoter region of a gene, unwinds the DNA double helix, and begins to synthesize a new RNA molecule.
One likely reason for this focus on transcription initiation is that it is a key point of control in gene expression. By regulating this, cells can control the amount of mRNA that is produced from a gene, which in turn affects the amount of protein that is ultimately synthesized.
Additionally, advances in molecular biology techniques, made it easier to study transcription initiation and other aspects of gene expression. This has led to significant progress and paved the way for the development of new therapeutic strategies based on the manipulation of gene expression.
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the introductory passage begins by mentioning the importance of the genetic blueprint found in cells before explaining more about gene expression and the study of a protein in h. walsbyi . this critical information, including that encoding the large halomucin protein, must be accurately copied each time a cell divides. what is the sequence of events involved in dna replication in e. coli, in which the process is especially well studied? put the steps below in order by placing each item in the correct order from left to right.
1. unwinding of the double-stranded DNA helix
2. separation of the two strands
3. primer binding
4. DNA polymerase III catalyses the formation of new complementary strands
5. synthesis of the DNA strands
6. proofreading and repair
The sequence of events in DNA replication in E. coli is as follows: First, the double-stranded DNA helix is unwound. Then, the two strands are separated. Next, DNA polymerase III binds a primer to the DNA strand. DNA polymerase III then catalyzes the formation of new complementary strands by adding nucleotides to each of the two strands. After this, the DNA strands are synthesized. Finally, the process is completed by proofreading and repairing. This sequence of events ensures that the genetic material is accurately copied each time a cell divides.
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Carbohydrates are universally used as an immediate energy source and they play structural roles for a variety of organisms. True/False?
It is True that carbohydrates are universally used as an immediate energy source and they play structural roles for a variety of organisms.
Carbohydrates are an important source of energy for many living organisms, from single-celled bacteria to multicellular animals like humans. They are broken down during cellular respiration to produce ATP, which is used by cells for various metabolic processes.
In addition to their energy-storage function, carbohydrates also have structural roles in many organisms. For example, cellulose, which is a type of carbohydrate, makes up the cell walls of plants and provides them with structural support. Chitin, another type of carbohydrate, makes up the exoskeletons of insects and crustaceans and provides them with protection and support.
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which term is used to describe an inherited trait that gives an organism an advantage in its particular environment?
Adaptation is used to describe an inherited trait that gives an organism an advantage in its particular environment.
In general , the adaptation is considered as the heritable changes that helps an organism, like plant or animal, that helps to survive and reproduce in its environment. Hence , Adaptation is the process in which a species becomes stable and able to survive in its environment as a result of natural selection's also works in taking up heritable variation over several generations.
Also, adaptation is known as a physical or behavioral feature in animal that make them suitable to survive in environment they are living. In other words, an adaptation is needed for the survival for any species.
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these glands have ducts and excrete their products onto the surface of the skin or into the lumen of hollow organs.
Exocrine organs have conduits and discharge their items onto the outer layer of the skin or into the lumen of hollow organs. The correct option(B).
Exocrine organs are organs that discharge their items, like chemicals, catalysts, and bodily fluid, onto the outer layer of the skin or into the lumen of empty organs through conduits. These conduits transport the discharges from the organs to the objective site, where they assume significant parts in keeping up with the body's homeostasis and well-being. Instances of exocrine organs incorporate perspiration organs, salivary organs, and the organs in the stomach-related framework that discharge stomach-related catalysts. Interestingly, endocrine organs are organs that discharge their items, like chemicals, straightforwardly into the circulatory system, where they can be conveyed to target empty organ cells and tissues all through the body. The endocrine framework works related to the sensory system to control the body's capabilities and keep up with its homeostasis.
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Q-These glands have ducts and excrete their products onto the surface of the skin or into the lumen of hollow organs.
A. Elastic
B. exocrine
C. Dendtrite
D. hyaline cartilage
I NEED THIS RIGHT NOW PLEASE
Lactic acid production increased in virus affected cells. ATP production decreased in virus affected cells.
Why are viruses so exhausting?
The immune system releases cytokines during viral infection, which induce inflammation and many of the typical signs of viral infection (eg, tiredness, aches and pains, malaise)
Although you may be progressively feeling better, it can take up to a year or longer for people to recover totally from post-viral fatigue. Another virus that triggers glycolysis is the non-enveloped double stranded DNA virus adenovirus. Non-tumorigenic breast epithelial cells infected with adenovirus 5 produced more lactic acid and consumed more glucose, while using less oxygen.
Percentage increase in lactic acid production will be (0.7-0.4)/0.7 i.e. 0.42 percentage increase.
ATP production decreased by (0.7-0.5)/0.7 i.e. 0.285 percentage.
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Why can't fragile X be cured?
The fact that bees can detect ultraviolet rays humans cannot is due to the difference between the human and bee _____.
Red-green color blindness is a sex-linked recessive trait in humans. Two people with normal color vision have a color-blind son. What are the genotypes of the parents?
•XnXn and XnY
•XnXn and XNY
•XNXn and XNY
•XNXN and XNY
•XNXN and XnY
As a result, the parents' genotypes are XNXr (for the father) and XnXn (for the mother), where Xn stands for the normal allele and Yr for the color blindness allele.
color blindness If a boy with red-green color blindness is born to two persons with normal color vision, then both parents must be red-green color blindness carriers. They each have one X chromosome that is normally paired with one X chromosome that carries the color blindness allele.As you can see, their son has a 50% chance of carrying the Xn chromosome and the Xr chromosome, making him a carrier of the color blindness trait.However, he also has a 50% chance of receiving the Xr chromosome from both of his parents.Red and green in particular are affected by color blindness, a hereditary disorder that impairs the capacity to distinguish between them. It is also referred to as a color vision impairment.
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consider the cross aabbccdd x aabbccdd. if the genes are independently assorting, how many different genotypes are possible in the offspring?
The genotype aabbccdd will be present in all of the offspring of the cross aabbccdd aabbccdd.
The distribution of one set of genes into gametes is independent of the distribution of another set of genes, according to the fundamental concept of genetics known as independent assortment. It follows that each gene is passed on to children randomly and independently of the others, and that the genes for one trait are not influenced by the genes for another trait. This idea, first put out by Gregor Mendel, is crucial to comprehending the principles of inheritance and how features are handed down from one generation to the next. For four monohybrid crossings that result in heterozygous genotypes, it is assumed that independent assortment is 1/2 x 1/2 x 1/2 = 1/16. Since the probability is more than 0.05, certain other outcomes are statistically possible.
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Capsules are neutrally charged. This being the case, what is the purpose of emulsifying the sample in serum in this staining procedure
The bacterial samples adhere better to the glass slides when serum is used.
What does emulsifying accomplish?
Emulsification's goal is to stabilize emulsions by stopping the breakdown that results from creaming aggregation and coalescence. Reduced dispersion density, smaller dispersed particle sizes, and oil droplet surface protection are viable solutions for these problems.
The capsule stain's function is to make the bacterial capsule's presence known. By using simple staining techniques or after the Gram stain, it can be difficult to see the water-soluble capsule of some bacterial cells.
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red-green color blindness is x-linked recessive. a woman having normal vision has a colorblind father. she has a son with a color-blind man. what is that probablility that the son is colorblind? a. 1/16 b. 1/2 c. 2/3 d. 1/8
The chances of a woman having a color-blind father and having a color-blind son by a color-blind partner are 1/2, thus option (B). is the correct answer.
His X chromosome carries the recessive gene if the woman's father has the disorder. The Y chromosome does not include this trait. Currently, she possesses a recessive gene on the lone X chromosome from her father and one X chromosome from her mother. She does not suffer from color blindness, hence this is another normal/dominant trait she inherited from her mother. She will pass one recessive gene or one normal gene to her sons. A male who is colorblind in this situation has a 50% chance of existence.
With Punnett square:
Mother: XX'c
Father: XcY
Son genes:
X X'c
Xc XXc X'cXc
Y Xy X'xY
Her half of the son will be having either the XY gene which will be normal and the other half will have X'xY and will be color-blind.
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you should conduct an experiment that would test whether the coating of extracellular slime changed the speed at which the slime mold moved across the substrate. what two conditions you will choose to text the hypothesis?
The two choices to test the hypothesis is to place the slime mold on the agar and another to place the slime mold on agar coated with extracellular slime.
You may plan an experiment with two conditions—one with slime mold placed on plain agar and one with slime mold placed on agar coated with extracellular slime—to see whether there are speed differences. In both cases, a food supply could be positioned at a set distance from the slime mold, and the time it took to get there could be monitored.
The mold wanders around in quest of the nutrients it needs to grow larger, just like an amoeba does. Throughout the entire experiment, we also saw that the slime mold prefers to live and thrive in cold, damp surroundings, such as those that are close to bodies of water, tree bark and branches, etc.
Slime molds are an uncommon group of organisms that were formerly categorized as fungi, plants, and mammals. Slime molds have cellulose in the cell walls of their spores, just like plants do. Slime molds are heterotrophs, in contrast to plants.
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In a skin infection, which cell will take up and process microbial antigens?
A. Intraepidermal macrophages (Langerhans cells)
B. Melanocytes
C. Tactile epithelial cells (Merkel cells)
D. Stem Cells
In a skin infection, Intraepidermal macrophages (Langerhans cells) cell will take up and process microbial antigens. Hence, Option A is the correct answer.
What do we mean by microbial antigens?The pathogen or invader is referred to as an antigen. It has the potential to elicit an immune response and is perceived as a threat by the immune system. Antigens are proteins found on the pathogen's surface. These are the substances to which the immune system reacts when they are recognised as foreign. Antigens can be whole microbes or isolated microbe components. Bacterial cell walls, flagella, capsules, and toxins are all antigenic components.
Bacterial antigaens can be found on the cell's flagella or on the cell surface. Differences between strains can be identified by using specific antibodies found in antisera that have been specially prepared.
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describe the following characteristics when a gene is active: o is the gene tightly or loosely wound around histones? o are there many or few methyl molecules attached to the gene? o are there many or few acetyl molecules attached to the genes associated with histones? o are there many or few mrna transcripts?
There are many or few mRNA transcripts.
When proteins referred to as transcription factors bind to two essential pieces of DNA, an enhancer and a promoter, transcription of a gene begins. Nobody understood how near they needed to be to one another for transcribing to take place considering how far apart these are.
The transcription factor binds to the promoter and then activates the RNA polymerase complex. This causes the gene to be transcribed into a messenger RNA, which is then translated into a protein in the cytoplasm. Protein translation and a physiological response happen as a result of gene transcription being activated.
By attaching to a promoter sequence in the gene's DNA, transcription factors start the process of gene expression. Gene expression is influenced by the physical makeup of DNA, which is bundled with proteins into chromatin, by regulating access to DNA.
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Jack created a table that compares the characteristics of planets and moons. Which of the following corrects the mistakes in Jack's table?
Planets
Made of rock or gas
Revolve around the sun
Moons
Made of rock
Revolve around the sun
Can have different shapes Have round shape
O Planets have a tail of gas and dust, and moons revolve around a planet.
O Planets have a round shape, and moons revolve around a planet.
O Planets revolve around a moon, and moons revolve around the sun.
O Planets revolve around the sun, and moons are made of gas.
If a gene is found only on the X chromosome and not the Y chromosome, it is said to be what?codominant traitsex-linked traitincomplete dominance trait.
If a gene is found only on the X chromosome and not the Y chromosome, it is said to be an X-linked or sex-linked trait. X-linked traits can be dominant or recessive
But they are usually expressed in a dominant or recessive pattern in males, who have only one X chromosome, as they do not have a second X chromosome to mask the effects of the X-linked trait. Females, who have two X chromosomes, can be carriers of X-linked traits, with the trait being expressed only if they inherit two copies of the mutant gene.In X-linked recessive inheritance, the gene is only expressed if both copies of the gene, one on each X chromosome, are mutated. Because females have two X chromosomes, they can be carriers of X-linked recessive traits, with the trait being expressed only if they inherit two copies of the mutant gene. In males, the trait is always expressed if the gene is present on the X chromosome. Examples of X-linked recessive traits include color blindness, hemophilia, and Duchenne muscular dystrophy.
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