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 third 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

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

Back

All offspring will have pink flowers (RW).

Front

What is the phenotype of a calico cat?

Back

A calico cat shows both orange and black fur, which is an example of codominance.

Front

If a red flower (RR) is crossed with a white flower (WW) and the result is pink flowers (RW), what type of inheritance is this?

Back

This is an example of incomplete dominance.

Front

What percentage of offspring will be white if incomplete dominance occurs in cats?

Back

0% of the offspring will be white.

Front

What is a Punnett square?

Back

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

Front

If a plant has the genotype RW, what color will its flowers be in incomplete dominance?

Back

The flowers will be pink.

Front

What does it mean if a trait is expressed in a codominant manner?

Back

Both alleles contribute to the phenotype, and both traits are visible.

Front

In a genetic cross, what does the term 'phenotype' refer to?

Back

The observable physical characteristics of an organism.