DEBio 13 Non-Mendelian Visual ID

Front

What is incomplete dominance?

Back

A genetic situation in which one allele does not completely dominate another allele, resulting in a new phenotype that is a blend of the two parental traits.

Front

Provide an example of incomplete dominance.

Back

In snapdragons, crossing a red flower (RR) with a white flower (WW) produces pink flowers (RW).

Front

What is codominance?

Back

A genetic scenario where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that is neither dominant nor recessive.

Front

Provide an example of codominance.

Back

In cattle, crossing a red cow (RR) with a white cow (WW) produces roan calves (RW), which have both red and white hairs.

Front

What is complete dominance?

Back

A form of inheritance where the phenotype of the heterozygote is the same as that of the dominant homozygote.

Front

Provide an example of complete dominance.

Back

In pea plants, crossing a tall plant (TT) with a short plant (tt) results in all tall offspring (Tt).

Front

What is polygenic inheritance?

Back

A type of inheritance where multiple genes influence a trait, resulting in a continuous range of phenotypes.

Front

Provide an example of polygenic inheritance.

Back

Human skin color is an example of polygenic inheritance, where multiple genes contribute to the final skin tone.

Front

What are multiple alleles?

Back

A situation in which three or more alleles exist for a particular gene, but an individual can only inherit two of them.

Front

Provide an example of multiple alleles.

Back

The ABO blood group system in humans is an example, with alleles A, B, and O.