Incomplete and Codominance

Front

What is codominance?

Back

A genetic scenario where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that is neither dominant nor recessive.

Front

What is incomplete dominance?

Back

A genetic scenario where the phenotype of a heterozygote is intermediate between the phenotypes of the two homozygotes.

Front

What is the phenotypic ratio when crossing a red flower (RR) with a speckled flower (RB)?

Back

2 red flowers and 2 speckled flowers.

Front

In codominance, how are the traits expressed?

Back

Both traits are fully expressed in the phenotype.

Front

In incomplete dominance, how are the traits expressed?

Back

The traits blend together to form a new phenotype.

Front

Give an example of codominance in plants.

Back

Red flowers (RR) and blue flowers (BB) produce speckled flowers (RB).

Front

Give an example of incomplete dominance in plants.

Back

Red flowers (RR) and white flowers (WW) produce pink flowers (RW).

Front

What type of inheritance pattern is shown when both alleles are visible?

Back

Codominance.

Front

What is the result of a cross between a red flower (RR) and a blue flower (BB) in codominance?

Back

All offspring will be speckled flowers (RB).

Front

What is the result of a cross between a red flower (RR) and a white flower (WW) in incomplete dominance?

Back

All offspring will be pink flowers (RW).