Codominance Review

What is codominance?

• A type of mutation

• A type of inheritance pattern

• A type of cell division

• A type of genetic disorder

In codominance, how are alleles expressed?

• Only one allele is expressed

• Neither allele is expressed

• Both alleles are expressed

• Alleles are expressed randomly

Which of the following is an example of codominance?

• Sickle cell anemia

• ABO blood type group

• Cystic fibrosis

• Hemophilia

What is an example of codominance in cattle?

• Pure red (RR) and pure white (WW) cattle

• Roan (RW) cattle

• Only pure red (RR) cattle

• Only pure white (WW) cattle

What is the genotype for red fur in certain cattle?

• RR

• RW

• WW

• WR

What does the term "Roan" refer to in cattle fur color?

• A mix of red and white hairs

• Only red hairs

• Only white hairs

• A mix of black and white hairs

Which allele represents the white fur color in cattle?

• R

• W

• RW

• RR

What is the genotype for roan fur in certain cattle?

• RR

• RW

• WW

• WR

What is the genotype of the offspring when a red cow (RR) is crossed with a white bull (WW)?

• RR

• WW

• RW

• WR

What is the probability that the offspring will have roan fur when a red cow is crossed with a white bull?

• 0%

• 25%

• 50%

• 100%