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.	Autopotyploidy	(i)	2n + 1
B.	Trisomy	(ii)	AAAA
C.	Allopolyploidy	(iii)	AABB
D.	Nullisomy	(iv)	2n 2

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

Answer 1

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

Autopolyploidy occurs when an individual has more than two sets of chromosomes (4n) (AAAA), all derived from an original species (2n). Trisomy is a chromosomal disorder characterized by an additional chromosome, so the person has 47 instead of 46. (2n+1). Down syndrome, Edward syndrome and Patau syndrome are the most common forms of trisomy. Allopolyploidy is characterized by an individual or strain whose chromosomes are composed of more than two genomes (AABB). Nullisomy is a genetic condition involving the lack of both the normal chromosomal pairs for a species (2n-2).

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