Incomplete Dominance and Codominance

Front

What is incomplete dominance?

Back

A genetic situation in which 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 is neither dominant nor recessive.

Front

If a plant with genotype RR (red flowers) is crossed with a plant with genotype WW (white flowers), what will be the genotype of the offspring?

Back

All offspring will have the genotype RW, resulting in pink flowers.

Front

In a cross between two wavy-haired individuals (SC), what percentage of their children will have wavy hair?

Back

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

Front

What is the phenotype of an individual with genotype CC?

Back

Curly hair.

Front

What is the phenotype of an individual with genotype SS?

Back

Straight hair.

Front

In a Punnett square, what does each box represent?

Back

Each box represents a possible genotype of the offspring from the parental genotypes.

Front

If a cat's fur color shows incomplete dominance, what colors can the offspring be?

Back

The offspring can be black, white, or gray, depending on the combination of alleles.

Front

What is the result of a cross between a red flowered plant (RR) and a white flowered plant (WW) in terms of flower color?

Back

All offspring will have pink flowers (RW) due to incomplete dominance.

Front

What percentage of offspring will be white if the parents are both gray (incomplete dominance)?

Back

0% if the alleles do not allow for white offspring.