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Failure of segregation of chromatids during cell division, leading to gain or loss of a single chromosome, is termed:
APolyploidy
BAneuploidy
CEuploidy
DTranslocation
Answer & Solution
Correct answer: B. Aneuploidy
Aneuploidy is a change in the number of individual chromosomes (trisomy or monosomy). Down's syndrome (trisomy 21) and Turner's syndrome (monosomy X) are examples. Polyploidy is gain of whole chromosome sets.
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