non mendelian genetics

Front

What is the term for a gene that is controlled by more than two alleles?

Back

Multiple Alleles

Front

In snapdragons, if a red flower (RR) is crossed with a white flower (rr), what color are the flowers that are Rr?

Back

Pink

Front

What is the phenotypic ratio when crossing a red flower (RR) with a speckled flower (RB) in a codominance scenario?

Back

2 red, 2 speckled

Front

If a red flowered plant (RR) breeds with a white flowered plant (WW) and the gene for petal color expresses incomplete dominance, what percentage of the offspring will have pink (RW) flowers?

Back

100%

Front

What is the pattern of heredity in which both alleles are simultaneously expressed in the heterozygote?

Back

Codominance

Front

Define incomplete dominance in the context of flower color inheritance.

Back

Incomplete dominance occurs when the phenotype of the heterozygote is intermediate between the phenotypes of the two homozygotes.

Front

What is the difference between codominance and incomplete dominance?

Back

In codominance, both alleles are fully expressed in the phenotype, while in incomplete dominance, the phenotype is a blend of the two alleles.

Front

Give an example of a trait that exhibits multiple alleles.

Back

Blood type in humans (A, B, AB, O) is an example of a trait controlled by multiple alleles.

Front

What is the expected phenotypic ratio of a monohybrid cross involving codominant traits?

Back

1:2:1 ratio for the three phenotypes.

Front

How does the concept of multiple alleles differ from simple dominance?

Back

Multiple alleles involve more than two variations of a gene, while simple dominance involves only two alleles where one is dominant over the other.