NEET Biology question
Genes A, B and C are linked. Genes A and B are more close than A and C. Find out the correct option for the given statements: I. A might be before B and C; II. B might be between A and C; III. C might be between A and B; IV. More crosses has occurred between A and C than A and B.
Answer: (D)
Solution
Since A and B are closer together than A and C, gene B must lie between genes A and C on the linear gene map (placing B between A and C automatically makes the A-C distance the sum of A-B plus B-C, naturally exceeding the A-B distance alone); this arrangement (A, then B, then C) is also consistent with A being
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