NEET Biology question
In Mendel's dihybrid cross, round seed shape () was dominant over wrinkled seeds (), and yellow cotyledon () was dominant over green cotyledon (). A round-yellow () plant was crossed with a wrinkled-green () plant, and the resulting was self-pollinated. What are the expected phenotypes and their ratio in the -generation?
Answer: (A)
Solution
The of this cross () is uniformly round and yellow (); since seed shape and cotyledon colour assort independently, selfing this yields all four combinations of the two traits in the classic dihybrid ratio Round Yellow : Round Green : Wrinkled Yellow : Wrinkled Green,
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