Some sweet-pea plants have purple flowers and other plants have white flowers. A homozygous variety of pea that has purple flowers is crossed with a homozygous variety that has white flowers. All the F1 have purple flowers. When these F1 are self-fertilized, the F2 appear in a ratio of 9/16 purple to 7/16 white. Show your work.

A) Give genotypes for the purple and white flowers in the F2 generation.

B) Draw a hypothetical biochemical pathway to explain the production of purple and white flowers in

sweet peas.

Question

Kiley

Biology

20 May, 08:31

Some sweet-pea plants have purple flowers and other plants have white flowers. A homozygous variety of pea that has purple flowers is crossed with a homozygous variety that has white flowers. All the F1 have purple flowers. When these F1 are self-fertilized, the F2 appear in a ratio of 9/16 purple to 7/16 white. Show your work.

A) Give genotypes for the purple and white flowers in the F2 generation.

B) Draw a hypothetical biochemical pathway to explain the production of purple and white flowers in

sweet peas.

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Answers (1)

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Juicy · Answer 1

Some sweet-pea plants have purple flowers and other plants have white flowers. A homozygous variety of pea that has purple flowers is crossed with a homozygous variety that has white flowers. All the F1 have purple flowers. When these F1 are self-fertilized, the F2 appear in a ratio of 9/16 purple to 7/16 white. Show your work.

A) Give genotypes for the purple and white flowers in the F2 generation.

PP x ww = Pw, Pw, Pw, Pw F1 generation

Pw x Pw = PP. Pw, Pw and ww F2 generation

3 purple and 1 white flower

B) Draw a hypothetical biochemical pathway to explain the production of purple and white flowers in sweet peas.