Dihybrid Cross
Problem 3: A genetic cross yielding a 9:3:3:1 ratio of offspring.
Which of the following genetic crosses would be predicted to give a phenotypic ratio of 9:3:3:1?
A. SSYY x ssyyB. SsYY x SSYy
C. SsYy x SsYy
D. SSyy x ssYY
E. ssYY x ssyy
University of Arizona
Tuesday, August 13, 1996
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