Biology, asked by britwik5, 8 months ago

Chiasma formation occurs in the diplotene stage but crossing over starts in the pachytene stage. How is that possible? I thought crossing over occurs only after the formation of chiasma.

Answers

Answered by raksha3009

Answer:

chiasma does not form in diplotene stage .. it just becomes visible in diplotene stage .. so it may be formed earlier .

Explanation:

The chiasma is a structure that forms between a pair of homologous chromosomes by crossover recombination and physically links the homologous chromosomes during meiosis

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Chiasma formation occurs in the diplotene stage but crossing over starts in the pachytene stage. How is that possible? I thought crossing over occurs only after the formation of chiasma.​

Answers

Chiasma formation occurs in the diplotene stage but crossing over starts in the pachytene stage. How is that possible? I thought crossing over occurs only after the formation of chiasma.