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Which of these is true regarding crossing over?

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in Biology – Class 11 by (272k points)
Which of these is true regarding crossing over?

(a) Exchange occurs between non-homologous chromosomes

(b) It involves recombination nodules

(c) It is not mediated by enzymes

(d) It occurs during zygotene

This question was posed to me at a job interview.

The question is from Cell Cycle and Division topic in portion Cell Cycle and Cell Division of Biology – Class 11

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Correct answer is (b) It involves recombination nodules

To explain: Crossing over takes place during the pachytene stage of prophase I. It is enzyme mediated and involves recombination nodules. Exchange of genetic material occurs between homologous chromosomes.

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