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 zygoteneThis 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

Which of these is true regarding crossing over?(a) Exchange occurs bet

1.	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 zygoteneThis 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
Answer» 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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