Nonmendelian Genetics

Front

Codominant and incompletely dominant traits have three phenotypes instead of two. How many alleles (versions of the gene) are involved?

Back

2

Front

In snapdragons, flower color is an incompletely dominant trait. Which genotype will lead to a third blended phenotype? Options: Homozygous dominant, Heterozygous, Homozygous recessive

Back

Heterozygous

Front

Which cross would result in 100% pink flowers in snapdragons? Options:

RR x rr

,

rr x rr

,

Rr x Rr

,

RR x RR

Back

RR x rr

Front

In humans, curly hair is dominant to straight hair, and wavy hair is an intermediate texture. Which explanation most likely accounts for wavy hair?

Back

inheritance occurred through incomplete dominance

Front

In chickens, black is co dominant with white feathers. Which cross would result in 50% black and white feathers? Options: BW x BW, BB x WW, BW x WW, WW x BB

Back

BW x BW

Front

In a certain breed of cattle, both red and white hairs show up together. This is an example of which type of inheritance pattern?

Back

codominance

Front

What is the name for traits that are controlled by many genes such as height and skin color?

Back

polygenic

Front

A child has blood type AB. Which blood types would his parents most likely have? Options: B and O, O and A, A and B, AB and O

Back

A and B

Front

Which could NOT result from a cross between I^AI^B and I^Ai? Options: Type A Blood, Type B Blood, Type AB Blood, Type O Blood

Back

Type O Blood