A) euploidy
B) aneuploidy
C) duplication
D) polyploidy
Correct Answer: B
Solution :
Aneuploidy is the deletion or addition of a new or a few chromosomes from the original genomes. Aneuploidy develops due to non disjunction of homologous chromosomes at the time of meiosis so that abnormal gametes develop which are either deficient in chromosomes (eg, n -1, n - 1 -1) or surplus in chromosomes (eg, n + 1, n + 1 +1) Euploidy is the condition in which chromosome number is exact multiple of a genome. Polyploidy is the phenomenon of having more than two genomes or sets of chromosomes eg, 3n (triploid) 4n (tetraploid), 5n (pentaploid), etc. Duplication is the phenomenon of copying of DNA or chromosome.
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