Question

Match List I with List II

Choose the correct answer from the options given below:

• A. A-IV, B-I, C-II, D-III
• B. A-I, B-IV, C-III, D-II
• C. A-IV, B-II, C-III, D-I
• D. A-III, B-I, C-IV, D-II

Hint:

Double cross $= (A \times B) \times (C \times D)$; Single cross $= A \times B$; Three-way cross $= F_1 \times C$; Standard heterosis = Better than check.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Matching hybrid crossing schemes and quantitative heterosis definitions.

Step 2: Detailed Explanation:
Matching items in List I with List II:
1. Double cross hybrid (A) $\to$ Cross between two single cross $F_1$ hybrids: $(A \times B) \times (C \times D)$ (III).
2. $F_1$ hybrid (Single cross) (B) $\to$ Direct cross between two inbred parents: $A \times B$ (I).
3. Three-way cross hybrid (C) $\to$ Cross of a single cross $F_1$ with a third inbred line: $F_1 \times C$ (IV).
4. Standard heterosis (D) $\to$ Superiority and performance better than commercial check hybrid (II).

Step 3: Final Answer:
Matching summary: A $\to$ III, B $\to$ I, C $\to$ IV, D $\to$ II.