Genetics of Blood Types and Traits

True or false: Carriers can exist for both dominant and recessive conditions

• True

• False

Which of the following genotypes is responsible for the AB blood type in the ABO blood group system?

In Labrador retrievers, the coat color is an example of epistasis. Which of the following statements best describes this genetic interaction?

• One gene masks the expression of another gene.

• Two genes independently affect the same trait.

• A single gene affects multiple traits.

• Genes are located on the same chromosome.

What is the difference between wild-type alleles and mutant alleles?

• Wild-type alleles are always dominant, while mutant alleles are always recessive.

• Wild-type alleles are the most common form in a population, while mutant alleles are variations that differ from the wild type.

• Wild-type alleles are found only in animals, while mutant alleles are found only in plants.

• Wild-type alleles are inherited from the mother, while mutant alleles are inherited from the father.

True or False: A father can pass an X-linked trait to his son.

• True

• False

Which blood type is considered the universal donor, and why?

• Type AB, because it has both A and B antigens.

• Type O, because it lacks A and B antigens.

• Type A, because it has A antigens.

• Type B, because it has B antigens.

In a genetic cross between a person with blood type O and a person with blood type AB, what are the possible blood types of their offspring?

• A and B

• A, B, AB, and O

• AB and O

• Only O

Which of the following is true about X-linked dominate diseases?

• More common in males

• More common in females

• Equal display between males and females

• The expression of the disease usally skips generations

Blood Type (ABO) is an example of which type of expression?

• Codominace

• Incomplete Dominance

• Partial Dominance

• Autosomal Dominate