1st EditionKenneth R. Miller, Levine2,470 explanations

1st EditionHolt McDougal562 explanations

1st EditionKenneth R. Miller, Levine2,591 explanations

1st EditionStephen Nowicki1,895 explanations

BIOLOGYIn a certain plant, leaf size is determined by four independently assorting genes acting additively. Thus, alleles A, B, C, and D each adds 4 cm to leaf length and alleles A', B', C', and D' each adds 2 cm to leaf length. Therefore, an A/A, B/B, C/C, D/D plant has leaves 32 cm long and an A'/A', B'/B', C'/C', D'/D' plant has leaves 16 cm long. a. If true-breeding plants with leaves 32 cm long are crossed to true-breeding plants with leaves 16 cm long, the $F_1$ will have leaves 24 cm long, that is, A/A', B/B', C/C', D/D'. List all possible leaf lengths and their expected frequencies in the $F_2$ generation produced from these $F_1$ plants. b. Now assume that in a randomly mating population the following allele frequencies occur: frequency of A = 0.9, frequency of A' = 0.1, frequency of B = 0.9, frequency of B' = 0.1, frequency of C = 0.1, frequency of C' = 0.9, frequency of D = 0.5, frequency of D' = 0.5.