A geneticist crossed homozygous, dominant green pod color pea plants (GG) with homozygous recessive yellow pod color pea plants (gg). All the plants in the F1 generation had green pods. What ratio of green pod plants to yellow pod plants would you predict when you cross a green pod F1 plant with a yellow pod plant? A. All of the plants will have a green pod color. B. Half of the plants will have a green pod color, and half of the plants will have a yellow pod color. C. Three-quarters of the plants will have a green pod color and one quarter will have a yellow pod color. D. All of the plants will have a yellow pod color.

Question

Biology

Jan Dickerson

1 April, 16:27

A geneticist crossed homozygous, dominant green pod color pea plants (GG) with homozygous recessive yellow pod color pea plants (gg). All the plants in the F1 generation had green pods. What ratio of green pod plants to yellow pod plants would you predict when you cross a green pod F1 plant with a yellow pod plant? A. All of the plants will have a green pod color. B. Half of the plants will have a green pod color, and half of the plants will have a yellow pod color. C. Three-quarters of the plants will have a green pod color and one quarter will have a yellow pod color. D. All of the plants will have a yellow pod color.

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Answers (1)

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Simone Wolf · Answer 1

Answer: Option B

Explanation:

For the first crossing

GG. gg

Gg

For the second crossing which is a form of backcross to produce the true breed recessive P1

Gg gg

Gg gg

½ ½

green yellow