Exam 11: Single-Gene Inheritance and Meiosis Rock for a Cause

One of the mutations of the CFTR gene is the result of the deletion of three consecutive nucleotides.This leads to all of the following,EXCEPT

In a diploid organism

Gametes differ from other cells in the body because gametes

A disease caused by gene X is an autosomal dominant disease but is modified by expression of a gene on another chromosome gene Y.If gene Y has two recessive alleles,then the disease is mild.If there is a dominant allele present for gene Y,then the disease is aggressive.What are the chances the child will have the aggressive form of the disease?

Explain how a chromosome you inherited from your father could have information (alleles)from both his father and his mother.

Sister chromatids are separated during

A mutation in DNA can

What is meant by the terms diploid and haploid? Give an example of a diploid human cell and a haploid human cell.

Show the possible gametes you could produce as a result of independent assortment.

During meiosis,

One parent has one copy of a dominant allele for gene 87 and one recessive allele for Gene 87.The other parent has two copies of the dominant allele for Gene 87.What is the chance that their children will inherit the recessive condition (two copies of Gene 87)? You may need to draw a Punnett square to figure this out.

Protein X is normally used to transport sugar into cells,so the cell can break down the sugar and use it for energy.If protein X is not folded properly,what might happen to the cell?

Humans have

Which represents a cross between 2 individuals heterozygous for a single trait?

A human female has how many pairs of homologous chromosomes?

How is genetic diversity created in meiosis I?

All of the following are true of mutations,EXCEPT

A mutation in a DNA coding region of a protein can cause

A phenotypically normal woman marries a man with CMT disease,a autosomal dominant disorder.They have a son who has CMT disease.What were the chances he would get the disease? (Draw a Punnett square to help you determine the answer.)

Medical treatment for patient with cystic fibrosis involves