Dihybrid Cross

How many offspring will you have in a dihybrid cross? 

• 4

• 8

• 16

• 5

T4 - What genotype is missing from this Punnett Square?

• RrYy

• RRYY

• rryy

• RrYY

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

T4 - Based off this Punnett Square, what fraction of the offspring will have wrinkled, yellow seeds?

• 9/16

• 3/16

• 1/16

• 16/16

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Assume mom's gametes are on the left, what is her genotype?

• TTZz

• TtZz

• ttZZ

• TtZZ

Tags

NGSS.HS-LS3-2

The chart shows a dihybrid cross between pea plants. What are the genotypes of the parents in this cross?

• RrYy and RrYy

• RRYY and rryy

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What was the primary objective of Mendel's dihybrid cross experiments?

• To determine the effect of environment on plant height

• To study the inheritance of two different traits

• To confirm the true-breeding nature of pea plants

• To understand the role of pollinators in plant breeding

What are the phenotype percentages of the offspring?

• 50 % Brown fur and 50% White fur

• 25 % Brown fur and 75% White fur

• 75 % Brown fur and 25% White fur

• 0% Brown fur and 100% White fur

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Assume dad's gametes are on top, what is his genotype?

• AAPP

• AaPp

• aaPP

• Aapp

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If you have a parent who has GgBb as their genotype, what are the possible alleles they could donate to their gametes?

• GB, Gb, gB, gb

• GB, GB, gb, gb

• Gb, Gb, Gb, GB

• GG, BB, gg, bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

T4 - Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to long tails (t). What percentage of the offspring of the cross BbTt x BBtt will have black fur and long tails?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3