A) monosomy
B) nullisomy
C) trisomy
D) tetrasomy
Correct Answer: A
Solution :
Aneuploidy is the deletion or addition of one or a few chromosomes from the original genomes. (i) Monosomy is (2 n -1), .e.g. Tuners syndrome. (ii) Nullisomy is (2 n - 2). (iii) Trisomy is (2 n + 1), .e.g., Klinefelters syndrome. (iv) Tetrasomy (2 n + 2)
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