Dihybrids

Dihybrid Cross Lesson

by Kenneth Hegwood

Multiple Choice

What percentage of the offspring that are listed above in the video are color-blind?

• 50

• 25

• 75

• 100

Multiple Choice

What percentage of the offspring that are listed above in the video are carriers of the color blind allele.

• 25

• 50

• 75

• 100

Multiple Choice

What percentage of the offspring that are listed above in the video have normal vision?

• 25

• 50

• 78

• 100

Multiple Select

According to the video, which of the possible gametes combinations is incorrect?

• RY

• rY

• rr

• ry

• YY

Multiple Choice

Although the video portion that you watched did not say what the overall ratio of the dihybrid cross was, what should it be?

• 10: 3:2:1

• 9:3:3:1

• 6:6: 2:2

• 1:2:1