What is the probability that a yellow (Y) and wrinkled (r) pea will appear from a cross of RrYy x RrYy? (B.6F)

Question

Question 14 options:

3/16

12/16

1/16

6/16

Answer 1

To determine the probability of a yellow and wrinkled pea appearing from a cross of RrYy x RrYy, we need to consider the possible combinations of alleles that can result from this cross.

In the parent cross RrYy x RrYy, each parent has 2 alleles for each trait (one from each parent). The possible combinations of alleles that can result from this cross are:

RY, Ry, rY, ry

where R represents the dominant allele for yellow color and y represents the recessive allele for wrinkled shape.

Out of these 4 possible combinations, only one combination (ry) represents a yellow and wrinkled pea. Therefore, the probability of getting a yellow and wrinkled pea from this cross is 1 out of 4.

Since there are a total of 16 possible combinations (4 combinations for each parent), the probability can be calculated as:

1/16

Therefore, the correct option is 1/16.