Incomplete and Codominance

Front

What is incomplete dominance?

Back

A genetic situation in which 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 simultaneously.

Front

Give an example of incomplete dominance.

Back

A red flower crossed with a white flower produces pink flowers.

Front

Give an example of codominance.

Back

A calico cat shows both orange and black fur, indicating the expression of both alleles.

Front

What is the phenotype of a heterozygous individual in incomplete dominance?

Back

The phenotype is a blend of the two parental traits.

Front

What is the phenotype of a heterozygous individual in codominance?

Back

The phenotype displays both parental traits distinctly.

Front

In a Punnett square for incomplete dominance, what percentage of offspring are expected to show the intermediate phenotype?

Back

50% of the offspring will show the intermediate phenotype.

Front

How can you identify codominance in a genetic cross?

Back

Look for offspring that express both parental traits simultaneously, such as a flower with both red and white patches.

Front

What is the main difference between incomplete dominance and codominance?

Back

Incomplete dominance results in a blended phenotype, while codominance results in both traits being fully expressed.

Front

What type of inheritance pattern is shown when a black and white chicken produce offspring with both black and white feathers?

Back

Codominance.