A) monosomic
B) trisomic
C) nullisomy
D) polyploidy
Correct Answer: C
Solution :
Nullisomy is an aneuploid condition in which a pair of homologous chromosomes is deficient and represented as \[2n-2\] Monosomy is an aneuploid condition in which a chromosome is deficient from its homologue and represented as \[2n-1\]. Trisomy is an aneuploid which has one extra chromosome and represented as \[2n+1\]. Polyploidy is the phenomenon of having more than two genomes or set of chromosomes i.e., \[3n-\] triploidy \[4n-\] tetraploidy \[5n-\] pentaploidy.
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