Question

Homologous chromosomes may exchange segments; this is called crossing over. crossing over increases genetic variability. when does crossing over occur?

Answer 1

A trade of chromosome segments among non-sister homologous chromatids happens and is referred to as crossing over.

Crossover happens while  chromosomes, usually  homologous times of the equal chromosome, spoil after which reconnect however to the specific quit piece. If they spoil on the equal location or locus withinside the collection of base pairs, the end result is an trade of genes, referred to as genetic recombination.

What are homologous chromosome?

Homologous chromosomes are made from chromosome pairs of about the equal length, centromere position, and marking pattern, for genes with the equal corresponding loci.

Thus it s well expalined.

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