Incomplete Dominance and Codominance

Front

What is incomplete dominance?

Back

Incomplete dominance is an inheritance pattern where the phenotype of the heterozygote is intermediate between the phenotypes of the two homozygotes.

Front

What is codominance?

Back

Codominance is an inheritance pattern in which both alleles for a gene are fully expressed in the offspring, resulting in a phenotype that shows both traits.

Front

In a cross between a red flower (RR) and a blue flower (BB), what is the expected phenotype of the offspring?

Back

The expected phenotype of the offspring will be 100% speckled flowers (RB).

Front

If a plant with genotype SC (wavy hair) is crossed with another SC plant, what percentage of the offspring will have wavy hair?

Back

50% of the offspring will have wavy hair (SC).

Front

What is the phenotype of a plant with genotype RR?

Back

The phenotype of a plant with genotype RR is red flowers.

Front

What is the phenotype of a plant with genotype BB?

Back

The phenotype of a plant with genotype BB is blue flowers.

Front

What is the phenotype of a plant with genotype RB?

Back

The phenotype of a plant with genotype RB is speckled flowers.

Front

What type of inheritance pattern results in a mixture of traits, such as yellow and blue flowers producing green offspring?

Back

This is an example of incomplete dominance.

Front

What is the expected phenotype ratio in a monohybrid cross involving codominance?

Back

The expected phenotype ratio is 1:2:1 for the three phenotypes.

Front

In codominance, how are the alleles expressed in the phenotype?

Back

In codominance, both alleles are expressed equally and visibly in the phenotype.