Question

Crossing over is advantageous because it brings
about
(a) variation (b) linkage
(c) inbreeding (d) stability

Answer 1

A) variation
It occurs at chiasmatic region on the chromosome

Answer 2

Crossing over is advantageous because it brings about variation.

* The exchange of genetic material between the non- sister chromatids of a pair of homologous chromosomes during meiosis.

It takes place during the pachytene stage of prophase I of meiosis.

* The sites at which this exchange takes place, it forms chiasmata.

* It is an important step that brings about recombination and thereby variation by exchanging of genetic material.