Non Mendelian Inheritance

If a normal woman carrying the recessive sex linked gene for color blindness marries a normal male, what percentage of their sons will be color blind?

• 0%
• 25%
• 50%
• 100%

In humans, hemophilia is a sex linked recessive trait. Females can be normal, carriers, or have the disease. Males will either have the disease or not (but they won’t ever be carriers). A woman who is a carrier marries a normal man. What is the probability that their children will have hemophilia?

• 0%
• 25%
• 50%
• 100%

What would we expect to happen in a test cross which involved genes that were closely linked?

• There would be a higher frequency of recombination.
• The offspring would show more individuals that represented the parents.
• The offspring would less individuals that represented the parents.
• The genes would assort themselves as if they were on separate chromosomes.

True/False: Genes that are found on the same chromosome are less likely to segregate/independently assort from one another.

• True

• False

When a heterozygote has a phenotype intermediate between the phenotypes of the homozygotes.

• Codominance

• Complete Dominance

• Incomplete Dominance

When a heterozygote has the phenotypes of both homozygotes simultaneously

• Codominance

• Complete Dominance

• Incomplete Dominance

When more than 2 alleles are present on a given locus

• Codominance

• Multiple Alleles

• Nondisjunction

When alleles at one locus mask the effects of alleles at a different locus

• Epistasis

• Multiple Alleles

• Codominance

• Gene Interaction

The study of heritable phenotype changes that are not results of changes in the DNA sequence is...

• Cytoplasmic Inheritance

• Epistasis

• Expressivity

• Epigenetics

A man with type AB blood marries a woman with type A blood. Which of the following blood types might their sons inherit?

• Type AB only

• Type A or type O

• Type A, type B, or type AB

• type A or type AB

• Type B or type O