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D
Meiosis
5.5 Cellular division for gametes (meiotic division) for reproduction
Organisms which reproduce sexually produce offspring which are genetically dissimilar from their parents and each other,
and the process of meiosis is required for this. Unlike mitosis, meiosis is used only by special reproductive cells, called
gametes. One gamete…

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Genetic variation
Meiosis and germline fertilisation increase genetic variation in a number of ways:
through the process of crossing over during prophase I (this occurs where alleles can be shuffled between
chromosomes where they cross over at points called chiasmata)
through genetic reassortment due to the random distribution and subsequent…

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