Question

Choose the correct answer from the alternatives given.
Match column I with column II and select the correct option from the given codes.

	Column I		Column II
A.	Chromosomal aberration	(i)	An additional sex chromosome
B.	Downs syndrome	(ii)	Inversion
C.	Klinefelters syndrome	(iii)	Presence of an extra chromosome
D.	Turners syndrome	(iv)	Absence of sex chromosome

• A. A-(ii), B-(iv), C-(i), D-(iii)
• B. A-(ii), B-(iv), C-(iii), D-(i)
• C. A-(ii), B-(iii), C-(i), D-(iv)
• D. A-(iii), B-(iv), C-(i), D-(ii)

Answer 1

The correct option is C A-(ii), B-(iii), C-(i), D-(iv)

An inversion is a chromosome rearrangement in which a segment of a chromosome is reversed end to end. A chromosome abnormality, disorder, anomaly, aberration, or mutation is a missing, extra, or irregular portion of chromosomal DNA. Hence, inversion can lead to chromosomal aberrations. Klinefelter syndrome is a sex chromosome disorder in boys and men that results from the presence of an extra X chromosome. Turner's syndrome also known as 45, X or 45, X0, is a condition in which a female is partly or completely missing an X chromosome.

So, the correct option is 'A-(ii), B-(iii), C-(i), D-(iv)'.