Codominance

What is the key difference between codominance and a monohybrid cross with complete dominance?

• In codominance, only one allele is expressed, while in complete dominance, both are.

• In codominance, both alleles are expressed in the phenotype, while in complete dominance, only the dominant allele is expressed.

• Codominance only occurs in animals, while complete dominance occurs in plants.

• A monohybrid cross always results in a mixture of traits, unlike codominance.

In chickens, if the allele for white feathers is represented by 'W' and the allele for black feathers is represented by 'B', what phenotype would a chicken with the genotype BW display?

• White feathers

• Black feathers

• Speckled (black and white) feathers

• Grey feathers

Which statement accurately describes the inheritance pattern of human blood group alleles?

• Allele I^O is dominant over both I^A and I^B.

• Alleles I^A and I^B are recessive to allele I^O.

• Alleles I^A and I^B are codominant, and I^O is recessive to both.

• All three alleles (I^A, I^B, I^O) are codominant.

If a father has the genotype I^A I^O and a mother has the genotype I^B I^O, what is the probability that their child will have blood type O?

• 0%

• 25%

• 50%

• 75%