Incomplete Dominance 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 equally.

Front

Example of incomplete dominance in rabbits.

Back

A cross between a long-haired rabbit and a short-haired rabbit produces offspring with medium-length fur.

Front

Example of codominance in flowers.

Back

In certain flowers, a red flower crossed with a white flower produces offspring with red and white patches.

Front

What does a Punnett square show?

Back

A Punnett square is a diagram that predicts the genetic makeup of offspring from a cross between two parents.

Front

What type of inheritance pattern is shown when a red and white flower produce a pink flower?

Back

Incomplete dominance.

Front

What type of inheritance pattern is shown when a black and white chicken produce a checkered chicken?

Back

Codominance.

Front

How can you identify incomplete dominance in a genetic cross?

Back

Look for a phenotype that is a blend of the two parental traits.

Front

How can you identify codominance in a genetic cross?

Back

Look for a phenotype that displays both parental traits distinctly.

Front

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

Back

A phenotype that is intermediate between the two homozygous phenotypes.