Modes of Inheritance Genetics

In pea plants, a tall plant is crossed with a short plant. 100% of the offspring are tall. Which best describes the allele for tall?

• Dominant

• Recessive

In pea plants, a purple flowered plant is crossed with a white flowered plant. The phenotypic ratio of offspring is: 50% purple and 50% white. Which mode of inheritance does the gene for flower color follow?

• complete dominance

• incomplete dominance

• codominance

In pea plants, the gene for pea pod color shows complete dominance. If two heterozygous parents are crossed, what is the expected phenotypic ratio?

• 1:0

• 1:1

• 3:1

• 0:1

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In pea plants, tall (A) is dominant to short (a). Also, purple flowers (B) are dominant to white flowers (b)? Which is (are) the genotype(s) of a plant is that tall with white flowers? Select all that apply.

• AABb

• AaBB

• Aabb

• AAbb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In snapdragons, flower color exhibits incomplete dominance. When crossed, red (RR) and white (R'R') flowers make pink flowers (RR'). Complete a cross between a pink flower and a red flower. Find the phenotype ratio.

• 1 red: 1 pink

• 4 red: 0 pink

• 4 pink: 0 white

• 1 pink: 1 white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In some chickens, feather color shows incomplete dominance. If a black chicken (bb) is mated with one that is blue (bb'), what is the probability of having a chicken that is black?

• 1/4

• 1/2

• 3/4

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

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

What is the genotype for a gray mouse?

• BB

• bb'

• bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

This is an example of ___________?

• Incomplete dominance
• Co-Dominance

This is an example of ___________.

•  Incomplete Dominance
•  Codominance

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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

• Incomplete Dominance
• Co dominance