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Because in the events of Meiosis the chromosomes split and then the sex cell only has half the number of chromosomes. Once the sperm & egg unite (fertilization) then the chromosomes pair up, and you get all 46 chromosomes.

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Why does a sex cell normally does not receive both chromosomes from a pair?

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Why does not a sex cell normally receive both chromosomes from a pair?

Homologous chromosomes are separated in anaphase I and then in anaphse II the chromosomes are separated into their chromatids. This results in 4 cells being produced with half the chromosome number (haploid).


Why a sex cell normally does not receive both chromosomes from a pair.?

Homologous chromosomes are separated in anaphase I and then in anaphse II the chromosomes are separated into their chromatids. This results in 4 cells being produced with half the chromosome number (haploid).


Why does a sex cell does not normally receive both chromosomes from a pair?

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