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Sagot :
To boost genetic variety, a process called crossing over takes place between homologous chromosomes. Without genetic variation, a species would go extinct. Genetic variation is the root of evolution.
It helps a species survive, it lets us identify individuals, it helps creatures adapt to their environments and to environmental changes, but it also helps a species emerge strong if it is favored by natural selection. If there is less genetic diversity, there won't be as much variety in the qualities, and the species would struggle to adapt to the changes and eventually become extinct. Therefore, a species' genetic diversity is crucial.
A piece of one chromosome is swapped for another during crossing over. A hybrid chromosome with a distinctive genetic material pattern is the end outcome. Each gamete has a unique DNA set because of recombination and independent assortment during meiosis. The resultant zygote has a special set of genes as a result. Prophase is when recombination or crossing across happens.
Learn more about variation visit: brainly.com/question/20126690
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