Question:
The breeding value of a parent is equal to
The breeding value of a parent is equal to
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Combining ability:
- General combining ability (GCA): Additive effects.
- Specific combining ability (SCA): Non-additive effects.
- Breeding value = 2 × GCA.
- General combining ability (GCA): Additive effects.
- Specific combining ability (SCA): Non-additive effects.
- Breeding value = 2 × GCA.
Updated On: Sep 1, 2026
- Thrice the general combining ability
- Twice the specific combining ability
- Twice the general combining ability
- Thrice the specific combining ability
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Question:
This question tests knowledge of combining ability in plant breeding.
Step 2: Detailed Explanation:
The breeding value of a parent is equal to twice the general combining ability (GCA).
This is because GCA is the average performance of a parent in crosses.
Thrice the GCA (A): Not correct.
Twice the specific combining ability (B): Not correct.
Thrice the SCA (D): Not correct.
Thus, the correct answer is twice the GCA.
Step 3: Final Answer:
Thus, the breeding value is twice the GCA, which corresponds to option (C).
[0.5cm]
This question tests knowledge of combining ability in plant breeding.
Step 2: Detailed Explanation:
The breeding value of a parent is equal to twice the general combining ability (GCA).
This is because GCA is the average performance of a parent in crosses.
Thrice the GCA (A): Not correct.
Twice the specific combining ability (B): Not correct.
Thrice the SCA (D): Not correct.
Thus, the correct answer is twice the GCA.
Step 3: Final Answer:
Thus, the breeding value is twice the GCA, which corresponds to option (C).
[0.5cm]
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