Punnett Squares and Dominance and Codominance

When one allele is not dominant over another, resulting in a blended phenotype for heterozygous offspring is considered....

• Incomplete Dominance

• Codominance

• Genetic Variation

• Heterozygous

When one allele is not dominant over the other, resulting in both traits expressed in a heterozygous individual.....

• Incomplete Dominance

• Codominance

• Blended Phenotype

Some flowers are controlled by codominance. Red flowers (RR), white flowers (WW) and speckled flowers (RW).

Cross a red flower with a speckled flower. What is the phenotypic ratio?

• 2 red, 2 speckled

• 2 red, 2 white

• 3 red, 1 speckled

• 1 red, 2 speckled, 1 white

Tags

NGSS.HS-LS3-2

Some flowers are controlled by codominance. Red flowers (RR), white flowers (WW) and Speckled flowers (WB).

Cross two speckled flowers.

• 1 red, 2 speckled, 1 white

• 2 red, 2 speckled

• 2 speckled, 2 white

• 1 red, 1 speckled, 2 white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Some flowers are controlled by codominance. Red flowers (RR), white flowers (WW) and Speckled flowers (WB).

Cross a red flower with a white flower.

• 1 red, 2 speckled, 1 white

• 2 red, 2 white

• 4 speckled

• 1 red, 1 speckled, 2 white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Incomplete dominance occurs in cats, which allows them to be Black, White, or Gray as shown on this Punnett square. What percentage of the offspring will be black?

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS4-3

Incomplete dominance occurs in cats, which allows them to be Black, White, or Gray as shown on this Punnett square. What percentage of the offspring will be white?

• 25%

• 50%

• 0%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Incomplete dominance occurs in cats, which allows them to be Black, White, or gray as shown on this Punnett square. What percentage of the offspring will be gray?

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A calico cat shows both the traits for tan fur and black fur. What kind of allele expression is this?

• Incomplete Dominance
• Codominance

• Heterozygous Expression

• Blended phenotype

A red flowered plant (RR) is crossed 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

NGSS.HS-LS3-2