Incomplete Dominance Codominance

Front

What is incomplete dominance?

Back

A genetic situation where one allele does not completely dominate another allele, resulting in a 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

What does a Punnett square represent?

Back

A diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles from the parents.

Front

In a cross between a red flowered plant (RR) and a white flowered plant (WW) showing incomplete dominance, what color will the offspring be?

Back

The offspring will be pink (RW), a blend of red and white.

Front

If a plant with genotype RW is crossed with another RW plant, what are the possible genotypes of the offspring?

Back

The possible genotypes are RR, RW, and WW.

Front

What percentage of offspring will be red (RR) when crossing RR and WW plants showing incomplete dominance?

Back

0%.

Front

In codominance, how do the traits appear in the offspring?

Back

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

Front

Give an example of codominance in animals.

Back

An example is the AB blood type in humans, where both A and B alleles are expressed.

Front

What is the phenotype of a plant with genotype WW when crossed with a plant with genotype RR in incomplete dominance?

Back

The phenotype will be pink (RW).

Front

How can you identify incomplete dominance in a genetic cross?

Back

By observing a phenotype that is a blend of the two parental traits.