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16 January, 03:03

When a chromosome pair fails to separate correctly in meiotic division, what is it called?

a. Chromosome deletions

b. Crossing-over

c. Nondisjunction

d. Trisomy

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  1. 16 January, 03:52
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    C. Nondisjunction.

    Nondisjunction is the failure of one or more pairs of homologous chromosomes or sister chromatids to separate normally during nuclear division. This can result in deformities in a new-born such as Down Syndrome, due to lack of chromosomes in the body.
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