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Concept

# Problem: A violet-flowered, long-stemmed hybrid pea plant was crossed with a true-breeding white-flowered, short-stemmed pea plant with the following offspring: 47 violet, long-stemmed plants; 40 white, long-stemmed plants; 38 violet, short-stemmed plants; and 41 white, short-stemmed plants. If two of the white, long-stemmed plants above were crossed, you would expect to get which of the results listed below?A. all white, long-stemmedB. 1/2 white, short-stemmed; 1/2 white, long-stemmedC. 3/4 white, long-stemmed; 1/4 white, short-stemmedD. 9/16 violet, long-stemmed plants; 3/16, white, long-stemmed plants; 3/16 violet, short-stemmed plants; 1/16 white, short-stemmed plantsE. They do not all have the same genotype so the expected progeny can not be determined

###### FREE Expert Solution

From the given problem, note that the parents of the first cross was a dihybrid (let's say VvLl) and a homozygous recessive (vvll). The possible genotype ratio of the offspring for this cross is 1 VvLl : 1 Vvll : 1 vvLl : 1 vvll. This does not deviate far from the given offspring.

###### Problem Details

A violet-flowered, long-stemmed hybrid pea plant was crossed with a true-breeding white-flowered, short-stemmed pea plant with the following offspring: 47 violet, long-stemmed plants; 40 white, long-stemmed plants; 38 violet, short-stemmed plants; and 41 white, short-stemmed plants. If two of the white, long-stemmed plants above were crossed, you would expect to get which of the results listed below?

A. all white, long-stemmed

B. 1/2 white, short-stemmed; 1/2 white, long-stemmed

C. 3/4 white, long-stemmed; 1/4 white, short-stemmed

D. 9/16 violet, long-stemmed plants; 3/16, white, long-stemmed plants; 3/16 violet, short-stemmed plants; 1/16 white, short-stemmed plants

E. They do not all have the same genotype so the expected progeny can not be determined