Dihybrid retake

What goes in box 3

• Aabb
• AABB
• AAbb
• aaBb

What goes in box 15

• aabb

• AABB

• aaBB

• AAbb

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%

What is the genotype for a pea plant heterozygous for round seeds (R), and homozygous recessive for green seeds (y)?

• Ry
• RRyy
• RrYy
• Rryy

Using the dihybrid cross and key provided, what is the probability of the offspring being tall and white?

• 9
• 2
• 3
• 6

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.

Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?

• 9/16

• 3/16

• 1/16

• 16/16

Based off this punnett square, what fraction of the offspring will have wrinkled, green seeds?

• 9/16

• 3/16

• 1/16

• 16/16

What is the genotype for a pea plant homozygous for round seeds (R), and heterozygous for yellow seeds?

• RrYy

• RRyy

• RRYy

• rryy

This is a Dihybrid Punnett Square. It has 16 boxes and crosses 2 traits instead of one. Use your knowledge of how to write genotypes and fill in the first row with the correct genotypes.

a

b

c

d

GGBB

GgBB

GgBb

GGBb

Tags

112.34.c.6.F