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 blend of traits in the offspring.

Front

What is codominance?

Back

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

Front

If a red flower (RR) is crossed with a white flower (WW), what color are the flowers that are RW?

Back

Pink.

Front

What percentage of offspring will have red (RR) flowers when a red flowered plant (RR) is crossed with a white flowered plant (WW)?

Back

0%.

Front

What type of inheritance pattern occurs when a child has wavy hair from a curly-haired parent and a straight-haired parent?

Back

Incomplete dominance.

Front

What happens to the traits of two alleles in incomplete dominance?

Back

The traits blend together in the offspring.

Front

In codominance, how are the traits expressed in the offspring?

Back

Both traits are fully expressed, resulting in a phenotype that shows both traits.

Front

Give an example of incomplete dominance in plants.

Back

Snapdragon flowers, where red (RR) and white (WW) flowers produce pink (RW) flowers.

Front

What is the result of crossing two plants with incomplete dominance?

Back

The offspring will show a blend of the parental traits.

Front

What is the difference between incomplete dominance and codominance?

Back

Incomplete dominance results in a blend of traits, while codominance results in both traits being fully expressed.