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 Co-Dominance?

Back

A genetic situation in which 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 cross between a red flower (RR) and a white flower (WW) produces pink flowers (RW).

Front

Give an example of Co-Dominance.

Back

A cross between a black chicken (BB) and a white chicken (WW) produces chickens with both black and white feathers (BW).

Front

What type of inheritance is shown when a grey offspring is produced from a black male and a white female?

Back

Incomplete Dominance.

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 Co-Dominance?

Back

The phenotype displays both parental traits distinctly.

Front

In a genetic cross, what does a 0% chance of inheriting a trait indicate?

Back

It indicates that the trait is not present in the parental genotypes.

Front

What is the main difference between Incomplete Dominance and Co-Dominance?

Back

Incomplete Dominance results in a blended phenotype, while Co-Dominance results in both traits being fully expressed.

Front

What is the expected phenotype ratio in a cross showing Incomplete Dominance?

Back

1:2:1 ratio of phenotypes.