Question

Aneuploidy is the term applied for the

• A. Gene mutation
• B. Chromosomal mutation
• C. Chromosomal mutations involving the addition or loss of one or more chromosomes
• D. Chromosomal mutation involving the addition of one or more complete set of chromosomes

Answer 1

Answer: (C)

Chromosomal mutations involving the addition or loss of one or more chromosomes

The presence of the abnormal number of chromosomes in a cell is called as aneuploidy. Chromosomal mutations involving the addition or loss of one or more chromosomes results in the abnormal number of chromosomes in a cell to which the term aneuploidy is applied. For example, a human cell having 45 or 47 chromosomes instead of the usual 46. One of the examples for aneuploidy is Klinefelter syndrome (KS) which describes a group of the chromosomal disorder in which there is at least one extra X chromosome to a normal male karyotype, 46, XY. XXY aneuploidy is the most common disorder of sex chromosomes in humans,

So, the correct answer is 'option c'.