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(Reguidit frae Diploid)
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Diploid cells hae twa homologous copies o each chromosome.

Ploidy is the nummer o sets o chromosomes in a cell. Uisually a gamete (sperm or egg, which fuse intae a single cell during the fertilisation phase o sexual reproduction) carries a full set o chromosomes that includes a single copy o each chromosome, as aneuploidy generally leads tae severe genetic disease in the offspring. The gametic or haploid nummer (n) is the nummer o chromosomes in a gamete.