Incomplete and Codominance

The blending of two traits in which one is not completely dominant over the other is known as ---

• incomplete dominance

• codominance

What type of inheritance pattern do two alleles for a gene follow if their traits blend together on the offspring?

• Incomplete dominance

• Codominance

If you cross a black chicken with a white chicken and only black AND white feathered chickens are produced, then feather color follows the inheritance pattern of ---

• Incomplete dominance

• Codominance

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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-LS3-2

This question has two parts. First, answer Part A. Then, answer Part B. 

Part A

The diagram below, of incomplete dominance, shows the crossing of two parent plants to produce heterozygous dominant offspring. In this case, however, the dominant trait doesn't express itself fully in the visible phenotype. 

If two of the incomplete dominant, heterozygous offspring were to reproduce, what will be the phenotype of 25% of the offspring?

Click on the color of the correct answer in the graphic.

Match the following: Referencing the graphic above, read the rows in the table below which describe crosses between flowers in the incomplete dominance situation described in the graphic.  Match the correct color for each one.

• white

• Two white-flowered parents reproduce. What color will 100% of the offspring be?

• pink

• Two red-flowered parents reproduce. What color will 100% of the offspring be?

• red

• Two pink-flowered parents reproduce. What color will 50% of the offspring be?

Tags

NGSS.HS-LS3-3

Incomplete dominance occurs in cats, which allows them to be Black, White, or gray as shown on this Punnett square. The percentage of the offspring that will be white is (a)   .

• 25

• 50

• 0

• 100

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A tall plant (TT) is crossed with a short plant (SS). The result is a medium plant (TS). This is what type of inheritance pattern?

• Incomplete dominance

• Codominance

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

____ is an inheritance pattern that results in offspring that are a MIXTURE of the two traits of its parents, like yellow and blue flowers making green offspring.

• incomplete dominance.

• codominance

Tags

NGSS.HS-LS3-1