Incomplete Dominance and Codominance

Front

What is incomplete dominance?

Back

A genetic situation where one allele does not completely dominate another allele, resulting in a new phenotype that is a blend of the two traits.

Front

What is codominance?

Back

A genetic situation where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that shows both traits.

Front

If a black chicken and a white chicken produce only black and white feathered chickens, what inheritance pattern is this an example of?

Back

Codominance.

Front

In a Punnett square showing incomplete dominance in cats, if 50% of the offspring are black, what percentage will be gray?

Back

50%.

Front

What phenotype does a calico cat exhibit?

Back

Both orange and black fur, demonstrating codominance.

Front

If a cow has both brown and white spots, what type of allele expression is this?

Back

Codominance.

Front

What is the expected percentage of white offspring if incomplete dominance results in only black and gray offspring?

Back

0%.

Front

In incomplete dominance, what is the phenotype of the heterozygous offspring?

Back

A blend of the two parental phenotypes.

Front

What is a Punnett square used for?

Back

To predict the genotypes and phenotypes of offspring from a genetic cross.

Front

If a trait shows incomplete dominance, what will the phenotype of the offspring be if both parents are homozygous for different traits?

Back

The offspring will show a blend of the two traits.