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.

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.

Explanation:

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

a chair, a bed, and a toothbrush

explanation:

i was told this before by a teacher, so yeah