Flash card practice Genetics Phenotypes and Ratios

What is the genotype of individual 7

• AA

• Aa

• aa

• bb

What is the phenotype of an individual with the genotype Aa?

• Dominant trait expressed

• Recessive trait expressed

• Homozygous recessive

• Heterozygous recessive

In tomatoes, Red fruit (R) is dominant over yellow fruit (r). A plant that is heterozygous for red fruit is crossed with a plant that has yellow fruit. What is the likely hood you will have a yellow tomato?

• 1/4

• 1/2

• 3/4

• 0

In rabbits, long ears (L) are dominant over short ears (l). A rabbit that has short ears is crossed with a rabbit that is heterozygous for long ears. What is the probability of obtaining a short-eared rabbit?

• 25%

• 50%

• 75%

• 100%

In a dihybrid cross, what is the expected phenotypic ratio of the offspring?

• 3:1

• 9:3:3:1

• 1:2:1

• 1:1:1:1

using the pedigree what is the pattern of inheritance?

• recessive

• dominant

• codominant

• incomplete dominance

What is the genotype of individual 11

• AA

• Aa

• aa

• AABb

In guinea pigs, black fur (B) is dominant over white fur (b). A guinea pig that is homozygous for black fur is crossed with a guinea pig that is heterozygous for black fur. What is the probability of obtaining a black-furred guinea pig?

• 0%

• 50%

• 75%

• 100%

In a monohybrid cross, what is the expected phenotypic ratio of the offspring if two heterozygous individuals have children?

• 1:1

• 2:1

• 3:1

• 4:1

Complete the punnett square showing all the possible blood types for the offspring produced by a type “O” mother and a Type “AB” father. What are percentages of each offspring?

• 25% Ai, 25% Bi, 25% A, 25% B

• 50% Ai, 50% Bi

• 75% Ai, 25% Bi

• 100% Ai, 0% Bi