Homework SourseAssume plant height is controlled by 4 gene pairs a and a b
Assume plant height is controlled by 4 gene pairs (a+ and a-, b+ and b-, c+ and c-, d+ and d-) which independently assort. The alleles also are additive and are equal in their effects, A tall plant that is homozygous for all contributing alleles (+) is mated to a short plant that is homozygous for noncontributing alleles (-). The F1 offspring are self mated to produce a F2 generation. Assuming there are no environmental affects:
a) What proportion of the F2 progeny will be the same phenotype as the short P1 parent?
b) How many phenotypes will there be in the F2 generation?
Solution
Answer:
a) Only 1
b) 256
See below
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