A) monosomy
B) nullisomy
C) trisomy
D) tetrasomy
Correct Answer: A
Solution :
When a change in the chromosome number does not involve entire sets of chromosome and restrict to only a few of chromosome, the situation is called aneuploidy. Aneuploidy may be of following types (a) Monosomic \[(2n-1)\] (b) Trisomic \[(2n+1)\] (c) Nullisomic \[(2n-1)\] (d) Tetrasomic \[(2n+1)\] (e) Double momosomic \[(2n-1\,-1)\] (f) Double trisomic \[(2n+1\,+1)\]
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