Answer :
Meiosis involves crossing over, which contributes to the creation and maintenance of genetic diversity in natural populations.
Each gamete has a unique DNA set because of recombination and independent assortment during meiosis. In recombination, the chromosome pairs align and unite again such that each chromosome contains a portion of the next one. Genetic variety is guaranteed in this way. In order to make four haploid daughter cells that aren't identical to either their diploid parent cell or to one another, meiosis employs recombination.
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