Dihybrid crosses

Which of the following genotypes is homozygous dominant?

• A
• Aa
• AA
• aa

Which of the following genotypes is heterozygous?

• Bb
• BB
• bb
• B

Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes

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-LS3-3

In a dihybrid cross

• one trait is crossed.
• two traits are crossed.
• four boxes are needed for the punnett square.
• mom's alleles are dominant.

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-LS4-3

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

What goes in box 6

• AaBB
• AABB
• aaBB
• AAbb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Select the following options that represent a genotype.

• Rr

• Round peas

• Smooth peas

• rr

What is a gamete? (Select all that apply)

• Haploid

• Diploid

• Egg cell

• Skin cell

• Sperm cell

Tags

NGSS.HS-LS3-2