Incomplete Dominance 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 for a gene are fully expressed, resulting in offspring with a phenotype that shows both traits simultaneously.

Front

What is the phenotypic ratio in a cross between a red flower (F^RF^R) and a speckled flower (F^RF^B)?

Back

50% red, 50% speckled.

Front

What is the genotype of a red flower in codominance?

Back

F^RF^R.

Front

What is the genotype of a blue flower in codominance?

Back

F^BF^B.

Front

What is the genotype of a speckled flower in codominance?

Back

F^RF^B.

Front

In a Punnett square showing incomplete dominance, what does a 1:2:1 ratio indicate?

Back

It indicates that there are three phenotypes: one for each homozygous parent and one for the heterozygous offspring.

Front

What is the result of crossing a red flower (RR) with a white flower (WW) in incomplete dominance?

Back

All offspring will have pink flowers (RW).

Front

What does it mean if a trait is expressed in a speckled pattern?

Back

It indicates codominance, where both alleles are expressed equally.

Front

What is the definition of a phenotype?

Back

The observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.