ET Dihybrid Cross Review 3/11/25

Cross Two Homozygous plants
(RRYY x rryy)
R = round seeds, r  = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds? 

• 0%
• 25%
• 50%
• 100%

Tags

NGSS.HS-LS3-2

A male beetle has the genotype Ttbb. If this beetle mates with a female with genotype TTBb, what is the chance their offspring will have the genotype TtBb?

• 3/16
• 4/16
• 8/16
• 12/16

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

What proportion of the offspring in Figure 11-4 would be expected to have white, smooth hair?

• 9/16
• 3/16
• 4/16
• 1/16

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

parent 1: GgBB
parent 2: ggBb
Find the gametes for parent 1.

• GB, GB, gB, gB
• gB, gb, gB, gb
• Gg, BB, GB, GB
• gg, Bb, gB, gb

A couple has three brown-eyed children. The parents are brown-eyed (Bb). The allele for brown eyes is dominant over the allele for blue eyes. They believe the fourth child they have will be blue-eyed. Which statement below explains what actually will happen?

• The couple will have a blue-eyed fourth child.

• The couple will have a brown-eyed fourth child.

• They have a 75% chance of having a blue-eyed child.

• They have a 25% chance of having a blue-eyed child.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In the dihybrid above, what are the genetic crosses for the parents?

• BBEE X bbee

• BBEE x BBEe

• BbEe x BbEe

• bbee x bbee

Tags

NGSS.HS-LS3-2