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Byju's Answer
Standard XII
Biology
Complete and Incomplete Linkage
Crossing over...
Question

Crossing over occurs at

A
two-stranded stage of chromosomes
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B
eight-stranded stage of chromosomes
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C
six-stranded stage of chromosomes
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D
four-stranded stage of chromosomes
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Solution

The correct option is D four-stranded stage of chromosomes
Crossing over occurs during pachytene stage in which chromosomes are four-stranded.

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