5 points
The red, yellow and green colors of bell peppers are controlled by two
gènes. One gene determines if the pigment produced by the plant will be
yellow or red, with red being dominant to yellow. Another gene
determines whether chlorophyll is broken down early in the growing
season. If the chlorophyll breaks down early, it is possible to harvest the
peppers after they have turned colors. The green chlorophyll normally
hides the red or yellow color. The gene for early loss of chlorophyll is
dominant to the gene for end-of-season loss. Predict the phenotypic ratio
for a mid-season harvest from a cross between a true-breeding yellow
pepper plant and a dihybrid pepper plant.
O 1 yellow: 1 red: 1 green
O 1 yellow: 2 green: 1 red
O 1 red: 2 green: 1 yellow
O 1 red: 1 yellow
O 1 red: 1 green

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mickymike92 mickymike92 · Answer 1 · 2022-04-28T12:25:52+02:00

The phenotypic ratio of the offspring will be 1 red: 1 yellow if a true-breeding yellow pepper plant is crossed with a dihybrid pepper plant.

Phenotypic ratio is the ratio of the phenotype of offspring produced from a cross between two parents.

Let the allele for yellow be y and red Y.

Let the allele for early chlorophyll break down be E and late loss be e.

The genotype of the parents are as follows:

The cross is as follows: yyEE × YyEe

The offspring produced will be:

yyEE, yyEe, YyEe, YyEe

The offspring will be: 2 yellow, 2red peppers

Therefore, the phenotypic ratio is 1 red: 1 yellow.

Learn more about phenotypic ratio at: https://brainly.com/question/15268229