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 - 2) (d) Tetrasomic (2n + 2) (e) Double momosomic (2n -1 -1) (f) Double trisomic (2n + 1 + 1)
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