Match List-I with List-II List-

CUET Preparation Today

Start Free Mocks

Home Questions AHSASCWSBP

Target Exam

CUET

Subject

Biology

Chapter

Principles of Inheritance and Variation

Question:

Match List-I with List-II

List-I Term	List-II Chromosome formulation
(A) Diploid	(I) $2n-1$
(B) Aneuploidy	(II) $4n$
(C) Haploid	(III) $n$
(D) Polyploidy	(IV) $2n$

Choose the correct answer from the options given below:

Options:

(A)-(I), (B)-(II), (C)-(III), (D)-(IV)

(A)-(I), (B)-(III), (C)-(II), (D)-(IV)

(A)-(I), (B)-(II), (C)-(IV), (D)-(III)

(A)-(IV), (B)-(I), (C)-(III), (D)-(II)

Correct Answer:

(A)-(IV), (B)-(I), (C)-(III), (D)-(II)

Explanation:

The correct answer is Option (4) → (A)-(IV), (B)-(I), (C)-(III), (D)-(II)

List-I Term	List-II Chromosome formulation
(A) Diploid	(IV) $2n$
(B) Aneuploidy	(I) $2n-1$
(C) Haploid	(III) $n$
(D) Polyploidy	(II) $4n

(A) Diploid → (IV) 2n

Diploid organisms have two complete sets of chromosomes (one from each parent). Example: Humans (2n = 46). So, Diploid = 2n.

(B) Aneuploidy → (I) 2n − 1

Aneuploidy = loss or gain of one or a few chromosomes, not a whole set. Example: Turner’s syndrome (45, X → 2n − 1), Down’s syndrome (47, +21 → 2n + 1). So, Aneuploidy = 2n − 1 (or 2n + 1).

(C) Haploid → (III) n

Haploid organisms/gametes contain only one set of chromosomes. Example: Human gametes (n = 23). So, Haploid = n.

(D) Polyploidy → (II) 4n

Polyploidy = more than two complete sets of chromosomes. Common in plants (e.g., wheat is hexaploid, 6n). Example given: 4n (tetraploid). So, Polyploidy = 4n.