Why are zygote cells diploid?
They are formed by the fusion of two haploid gametes, each gamete contains only one set of chromosomes.
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Give two reasons why meiosis is important in organisms.
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Name two processes in meiosis that lead to genetic variation.
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When does crossing over take place in meiosis?
Crossing over takes place in prophase I.
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What is crossing over?
Crossing over is when pairs of homologous chromosomes swap portions of their chromatids (and hence alleles).
Crossing over is sometimes called recombination.
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When does independent segregation take place in meiosis?
Independent segregation takes place in metaphase I.
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What is independent segregation?
Independent segregation is when pairs of homologous chromosomes arrange themselves randomly on the cell's equator.
Independent segregation is sometimes called independent assortment.
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