Given figure shows a pair of homologous chromosomes during meiosis.
Maximum crossing over will take place between genes
A
A and a, D and d
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B
C and d, c and D
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C
B and c, b and C
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D
A and d, a and D
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Solution
The correct option is D A and d, a and D Increase in distance between genes increases the chances of crossing over. As A and d & a and D are located farther away, chances of crossing over are maximum.