AP Biology Incomplete Dominance Practice Problems

This is an example of ___________?

• Incomplete dominance
• Co-Dominance

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What type of inheritance do two alleles have if their traits blend together? 

• Incomplete Dominance
• Co-Dominance

Radish color is incompletely dominant, red and white are pure breeding colors. While heterozygous are purple.

Cross a red radish with a white radish. What is the ratio of the offspring?

• 4 purple

• 1 red, 2 purple, 1 white

• 2 red, 2 white

• 1 red, 1 purple, 2 white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Radish color is incompletely dominant, red and white are pure breeding colors. While heterozygous are purple.

Cross a red radish with a purple radish. What is the ratio of the offspring?

• 4 purple

• 1 red, 2 purple, 1 white

• 2 red, 2 purple

• 1 red, 1 purple, 2 white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Radish color is incompletely dominant, red and white are pure breeding colors. While heterozygous are purple.

Cross a white radish with a purple radish. What is the ratio of the offspring?

• 4 purple

• 1 red, 2 purple, 1 white

• 2 purple, 2 white

• 1 red, 1 purple, 2 white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In mice coat color is incompletely dominant. Black and white are homozygous. Brown mice are heterozygous.

What is the genotype for a brown mouse?

• BB

• BW

• WW

• bw

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

How many alleles does an individual have for each trait?

• 1
• 2
• 3
• 4

The different forms of a gene are called

• traits
• pollinators
• alleles
• hybrids

Tags

NGSS.HS-LS3-2

A red flowered plant (RR) breeds with a White flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance.  What percentage of the offspring will have pink (RW) flowers?

• 0%
• 25%
• 50%
• 100%

Tags

NGSS.HS-LS3-1

Snap dragon color is a incomplete dominant trait.  A red flower (RR) is crossed with white flower (WW)? What color are flowers that are RW?

• Red
• Red and White
• White
• Pink

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2