AP Biology Unit 5 Heredity

In a monohybrid cross of complete dominance, what is the phenotypic ratio?

• 1:2:1

• 3:1

• 9:3:3:1

• 12:4

Tags

NGSS.HS-LS3-3

In a monohybrid cross of incomplete dominance, what is the phenotypic ratio?

• 1:2:1

• 3:1

• 9:3:3:1

• 12:4

Tags

NGSS.HS-LS3-3

In a dihybrid cross of complete dominance, what is the phenotypic ratio?

• 1:2:1

• 3:1

• 9:3:3:1

• 12:4

Tags

NGSS.HS-LS3-3

In a population of 100 offspring, how many would you expect to be homozygous dominant in a cross between a homozygous dominant and a homozygous recessive parent?

• 0

• 25

• 50

• 75

• 100

Tags

NGSS.HS-LS3-3

In a population of 200 offspring, how many would you expect to be homozygous recessive in a cross between a heterozygous and a homozygous recessive parent?

• 0

• 50

• 100

• 150

• 200

Tags

NGSS.HS-LS3-3

In an incomplete dominance cross between a white flower and a red flower, what is the probability of a pink offspring?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-3

In a complete dominance cross between a white, terminal (recessive) and red, axial (dominant) flower, what is the probability of a red, axial offspring?

• 1/16

• 3/16

• 9/16

• 16/16

Tags

NGSS.HS-LS3-3

In a cross between an individual with type A blood and an individual with type B blood, what is the probability of an offspring with type O blood?

• 0/4

• 1/4

• 1/2

• 3/4

• 4/4

Tags

NGSS.HS-LS3-3

In a cross between two roan cows (codominant), what is the probability of a white cow?

• 0/4

• 1/4

• 2/4

• 3/4

• 4/4

Tags

NGSS.HS-LS3-3

Identify which of the following descriptions about dominance are correct

• Incomplete dominance involves the homozygous dominant and heterozygous looking the same

• Incomplete dominance involves the heterozygous offspring resulting in an intermediate between the two dominant traits

• Codominance involves the heterozygous offspring resulting in an intermediate between the two dominant traits

• Codominance involves the homozygous dominant and heterozygous looking the same