Biology, asked by PragyaTbia, 1 year ago

Write a note on crossing over.

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Answered by nuzha

6

The DNA strands must be broken to exchange their segments. The portions of the chromosome that undergo crossing over contain the same gene loci. Crossing-over leads to the recombination of the genes on the chromosomes. ... Crossing overcan occur at several locations between a synapsing pair of homologous chromosomes

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