Homework Answers
Convert this trihybrid cross into 3 monohybrid crosses.
Aa × Aa = 3/4 A_, 1/4 aa
Bb × bb = 1/2 Bb, 1/2 bb
CC × cc = 1 Cc
a. A_B_C_ = 3/4 × 1/2 × 1 = 3/8
b. Two dominant traits + three dominant traits =
A_B_cc + A_bbC_ + aaB_C_ + A_B_C_ =
(3/4 × 1/2 × 0) + (3/4 × 1/2 × 1) + (1/4 × 1/2 × 1) + (3/4 × 1/2 × 1) = 0 + 3/8 + 1/8 + 3/8 = 7/8
c. A_bbcc + aaB_cc + aabbC_ = (3/4 × 1/2 × 0) + (1/4 × 1/2 × 0) + (1/4 × 1/2 × 1) = 0 + 0 + 1/8 = 1/8
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