A : Antlers in male deer are sex influenced traits.
R : These are controlled by autosomal genes which are influenced by the sex of bearer.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
B. If both Assertion & Reason are true and the reason is not the correct explanation of the assertion , then mark (2)
C. If Assertion is true statement but Reason is false, then mark (3)
D. If both Assertion and Reason are false statements, then mark (4)

Answer

To solve the assertion-reason question, we will analyze both the assertion and the reason step by step.

### Step 1: Analyze the Assertion
The assertion states: "Antlers in male deer are sex-influenced traits."

- **Understanding the Term**: Sex-influenced traits are those traits that are controlled by autosomal genes but are expressed differently in males and females.
- **Correct Classification**: In this case, antlers in male deer are actually classified as sex-limited traits, not sex-influenced traits. This means that the trait (antlers) is typically expressed only in males and not in females at all.

**Conclusion for Step 1**: The assertion is false because antlers in male deer are not sex-influenced traits; they are sex-limited traits.

### Step 2: Analyze the Reason
The reason states: "These are controlled by autosomal genes which are influenced by the sex of the bearer."

- **Understanding the Term**: This statement suggests that the trait is influenced by the sex of the individual, which aligns with the definition of sex-influenced traits. However, as established, antlers are not expressed in females at all, which makes this statement misleading.
- **Correct Classification**: Antlers are indeed controlled by autosomal genes, but since they are not expressed in females, the statement about being influenced by the sex of the bearer is misleading in this context.

**Conclusion for Step 2**: The reason is also false because it incorrectly describes the nature of the trait.

### Final Conclusion
Both the assertion and the reason are false. Therefore, the correct answer is that both statements are incorrect.

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