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Genetics

This section covers topics of genetics such as variation, pedigrees, Mendelian genetics and mutations.

500 Questions

A test cross made with a cat that may be heterozygous for a recessive trait what is the presumed genotype of the cat explain?

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Asked by Xoxocutegirl95

A test cross made for a heterozygous recessive trait would show a dominant gene and a recessive gene. The cat would have one dominant gene (A) and 1 recessive (a).

What happens right before transcription begins?

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Asked by Kyle Shumsky

RNA polymerase is guided to the correct place -apex

Why does an insert mutation usually cause more defects during protein synthesis than a point mutation?

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Asked by Wiki User

Insertion mutations can affect many amino acids in the protein.
An insertion mutation usually causes more defects during protein synthesis than point mutation because an insertion mutation will affect many amino acids in the protein.

What is the correct pairing of DNA bases?

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Asked by Wiki User

A with T, and C with G.

Does a nerve cell work with other cells?

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Asked by Wiki User

From what I read, glial cells and astrocytes support and nourish neurons. Maybe they work with brain cells but am not too sure. They communicate with other cells through synapses.

Sorry b.t.w for not being too helpful and u probably can’t rely on this anyways 😢.

Ik this was like 7ys ago 😊

What is replication and what is its importance?

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Asked by Wiki User

when one DNA is split apart by a helicase and then DNA polymerase comes along and adds new DNA to the half strands and it is important because without it every organism would be be microscopic

What is the description of the process of diffusion?

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Asked by Wiki User

During diffusion, the random motion of atoms causes them to spread out gradually.

Why tip of stalagmometer flattened?

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Asked by Wiki User

When the force due to gravity on a drop, acting in the downward direction, becomes infinitesimally greater than the upward force of surface tension, the drop detaches from the stalagmometer and falls down.

What is organism physical appearance?

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Asked by Wiki User

An organism's physical appearance is its phenotype. This is distinct from its genetic makeup, called its genotype.

Why do sex-linked traits follow different patterns of inheritence than other traits?

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Asked by Wiki User

Sexlinked traits follow a different pattern of inheritance than a non-sex linked trait because of the size difference between the X and y chromosomes.

Think about non-sex chormosomes as being the same size, each having the exact same number of genes in the same postions (loci). This means that a person has to have two copies of the recessive genes (one on each homolog of that chromosome) before the trait will be expressed.

Lets say A is normal (dominant) and a is abnormal (recessive).

People who are aa have the abnormal condition and people who are AA or Aa are normal. The normal ratio is 1 AA:2 Aa:1 aa if both parents are Aa. There is a 25% chance that a child will inherit two abnormal genes and the chance of any sex child will be so affected is exactly the same.

When a recessive trait is located on the X chromosome only a female with two X chromosomes has the same number of genes on each X chromosome (the two X chromosomes have the same inheritance behavior as a homolog chromosome in females). In males who inherit the much smaller y chromosome there are many genes on the X chromosome that do not have a matching gene on the y chromosome. This means that recessive traits on the X chromosome that have no matching genetic material on the y chromosome will always be expressed.

So, lets say that there is a family where the mother is Aa and the father (who only has one allele on the y chromosome is A. (A is normal and a is abnormal).

None of the daughters produced can be aa, because the father will always pass A. Daughters will only be Aa or AA.

Sons on the other hand, will get either A or a from the mother and, since the y chromosome has no genetic material at this gene locus the boys will be A normal or a affected at in a 1:1 ratio.

If the father is a on his X chromosome, and the mother is AA 100% of the daughters will be carriers (Aa) and all the sons will be normal (A-).

What are cytokines Explain their structure function?

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Asked by Wiki User

cytokines are a number of small proteins that are secreated by a specific cell of immune system which carry signals and thus have an effect on other cells. cytokines are one type of protein that serve as messanger between cells it regulate various inflammatory responses Cytokines interact with cells of the immune system in order to regulate the body's response to disease and infection. Cytokines also mediate normal cellular processes in the body.

How Cytokines WorkThe immune system is complex -- different types of immune cells and proteins do different jobs. Cytokines are among those proteins. Explaining how cytokines work is difficult.

Cytokines are released by cells into the circulation or directly into tissue. The cytokines locate target immune cells and interact with receptors on the target immune cells by binding to them. The interaction triggers or stimulates specific responses by the target cells.

Where do pairs come from?

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Asked by Wiki User

Humans have 23 pairs of chromosomes. Males have 1 X chro. and 1 Y chro. in a pair. Females just have 2 X's. The first 22 pairs are evenly spaced between male and female, but the 23rd depicts which gender you are.
Chromosomes are an important part of your DNA.

Polymer of amino acids that can be detected in urine?

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Asked by Wiki User

Wld hv same question. Apparently quite possible.

Why protein production is important in a cell?

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Asked by Wiki User

because it is

What do you call the person who carries out the agent of change's instructions?

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Asked by Wiki User

The person who carries out the agent of change's instructions is commonly referred to as an implementer. The primary role of an implementer is to ensure that the changes proposed by the agent of change are properly executed, and that the desired outcome is achieved. Implementers often focus on the most efficient and cost-effective way to implement a change, and typically have strong organizational and problem-solving skills. They are also responsible for communicating the progress of the change to the agent of change, and for troubleshooting any issues that may arise.

The responsibilities of implementers can be broken down into the following categories:

  • Organizing and planning the change process
  • Identifying potential risks and making contingency plans
  • Developing an implementation timeline
  • Coordinating the resources needed to carry out the change
  • Actively monitoring the change process
  • Troubleshooting any problems that arise
  • Communicating updates and progress to the agent of change

The success of a change initiative depends greatly on the effectiveness of its implementer. An experienced and knowledgeable implementer can be the difference between a successful change and an unsuccessful one.

What would be the nucleus in a factory?

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Asked by Wiki User

Perhaps it would be the safe in which the original blueprints to the factory and details of its processes are kept?

In this analogy the blueprints are the DNA. Copying of these blueprints is equivalent to transcription and protein synthesis.

Why does a plant cells need vacuole?

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Asked by Wiki User

The vacuoles in a cell hold water for the cell

The primary function of carbohydrates is energy production within cells?

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Asked by Wiki User

carbs are sugars so they give you energy so that helps the cells in your body work

What are small opening in the surface of a leaf surrounded by guard cells called?

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Asked by Wiki User

Stoma, they take in Carbon dioxide and let out oxygen

What membrane that allows only some materials to move in and out of the cell is?

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Asked by Wiki User

Such a membrane is said to be selectively permeable or semi-permeable.

What is the function of the pore?

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Asked by Wiki User

you sweat through pores and your hair grows through them

Is elodea plant a fully submerged plant?

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Asked by Wiki User

Yes, it is a fully-submerged plant; it's aquatic.