Biology, 07.04.2020 17:02 jenifferplowman
An animal scientist crossed a strain of large guinea pigs and a strain of small guinea pigs, and finds the F, are phenotypically uniform, with an average size intermediate between the two parents. She allows the Fı individuals to inter-mate, resulting in 1014 F2 individuals (guinea pigs are prolific). In the resulting F2 generation, 4 guinea pigs were in the smallest size class (which is the same as the small parental line).
a. From these data, estimate the number of segregating genes in the F1 affecting size in this cross (show your work).
b. Label the genes alphabetically (A, B, C, etc.) and assign genotypes to the Large parental line: Small parental line: F1 population:
c. Estimate the number of the expected F2 classes (different F2 phenotypes for size) (show your work)
Answers: 3
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An animal scientist crossed a strain of large guinea pigs and a strain of small guinea pigs, and fin...
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