NEED ANSWER ASAP (95 points) 1.Give an example of one type of mutation, Give a Definition of it, and explain what is might do.

2.Give an example of how the environment can effect an organsism's genetics?

3.If a mutation happens in a somatic cell, will it be passed on to the next generation? Why or why not?

4.Explain the difference between a GENE and an ALLELE

5.What is the advantage of CROSSING OVER in Meiosis?

6.If the FREQUENCY of a trait is INCREASING in a population of animalswhat might that mean?

7.Explain very briefly what causes Trisomy 21

8.Imagine a population of animals is separated by a natural eventand half of them a forced into a valley, and the other half are forced into the mountains. Imagine both populations survive. What type of changes might you notice a million years later between the 2 populations? Why is this?

9.What are 3 things you know about Genetic Variation now that you didn't know before this Unit?

answer: c

explanation:

an individual’s sex (i.e., whether they are a male or female) is determined by the sex chromosomes. most people have two sex chromosomes, one that is inherited from their mother and one that is inherited from their father. typically, females have two x chromosomes (xx) and males have one x chromosome and one y chromosome (xy). conditions caused by changes (“mutations”) in genes located on the x chromosome are considered x-linked.

x-linked recessive inheritance

most x-linked conditions are recessive. this means that in a person with two x chromosomes (most females), both copies of a gene (i.e., one on each x chromosome) must have a change or mutation whereas in a person with one x chromosome (most males), only one copy of a gene must have a mutation. a female with a mutation in one copy of a gene on the x chromosome is said to be a “carrier” for an x-linked condition. a male with a mutation in a gene on the x chromosome is typically affected with the condition. because females have two copies of the x chromosome and males have only one x chromosome, x-linked recessive diseases are more common among males than females. however, x-linked recessive diseases can occur in both males and females.

for x-linked recessive disorders, an unaffected carrier mother who has a mutation in a gene on the x chromosome can transmit either the x chromosome with this mutation or a “normal” x chromosome to her children. if the father is unaffected, none of her daughters will be affected and all of her daughters will be unaffected—since they will inherit at least one normal x chromosome from their father. however, each daughter will have a 50% chance of being an unaffected carrier like her mother and a 50% chance of both x chromosomes being normal.

i think this picture will you.

answerblank(1) renal fascia; blank(2) fibrous capsule;