Question:
Given below are two statements:
Statement (I): Best genotypes in one environment will be best in others, if there is no genotype x environment interaction.
Statement (II): Genotype x environment interaction is not important for bull evaluation at different locations.
In light of the above statements, choose the most appropriate answer from the options given below:
Given below are two statements:
Statement (I): Best genotypes in one environment will be best in others, if there is no genotype x environment interaction.
Statement (II): Genotype x environment interaction is not important for bull evaluation at different locations.
In light of the above statements, choose the most appropriate answer from the options given below:
Statement (I): Best genotypes in one environment will be best in others, if there is no genotype x environment interaction.
Statement (II): Genotype x environment interaction is not important for bull evaluation at different locations.
In light of the above statements, choose the most appropriate answer from the options given below:
Show Hint
When GxE interaction is significant, breeders must select animals specifically for the environment they will perform in, rather than relying on a single global evaluation.
Updated On: Jul 24, 2026
- Both Statement (I) and Statement (II) are correct.
- Both Statement (I) and Statement (II) are incorrect.
- Statement (I) is correct but Statement (II) is incorrect.
- Statement (I) is incorrect but Statement (II) is correct.
Show Solution
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Genotype-by-Environment (GxE) interaction occurs when different genotypes perform differently relative to each other when grown in different environments.
This interaction is a key factor in quantitative genetics and livestock breeding programs.
Step 2: Detailed Explanation:
Let us evaluate both statements:
Statement (I) is correct.
If there is no GxE interaction, the relative performance of different genotypes remains consistent across different environments.
The genotype that performs best in one environment will also perform best in others, as shown by parallel lines on a performance-by-environment plot.
Statement (II) is incorrect.
GxE interaction is highly important in dairy and beef cattle breeding, particularly for sire (bull) evaluation across different locations.
A bull whose daughters perform exceptionally well in a temperate, high-input environment may perform poorly in a tropical, low-input environment.
Evaluating and accounting for these interactions is essential to ensure that selected bulls are suited to the specific environment where their offspring will be raised.
Therefore, Statement (I) is correct, but Statement (II) is incorrect.
Step 3: Final Answer:
Statement (I) is correct but Statement (II) is incorrect.
Genotype-by-Environment (GxE) interaction occurs when different genotypes perform differently relative to each other when grown in different environments.
This interaction is a key factor in quantitative genetics and livestock breeding programs.
Step 2: Detailed Explanation:
Let us evaluate both statements:
Statement (I) is correct.
If there is no GxE interaction, the relative performance of different genotypes remains consistent across different environments.
The genotype that performs best in one environment will also perform best in others, as shown by parallel lines on a performance-by-environment plot.
Statement (II) is incorrect.
GxE interaction is highly important in dairy and beef cattle breeding, particularly for sire (bull) evaluation across different locations.
A bull whose daughters perform exceptionally well in a temperate, high-input environment may perform poorly in a tropical, low-input environment.
Evaluating and accounting for these interactions is essential to ensure that selected bulls are suited to the specific environment where their offspring will be raised.
Therefore, Statement (I) is correct, but Statement (II) is incorrect.
Step 3: Final Answer:
Statement (I) is correct but Statement (II) is incorrect.
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