Assertion : Males suffer from sex-linked disorders more often than females.
Reason : Traits governed by sex-linked recessive genes.

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Explanation

### Step-by-Step Text Solution:

1. **Understanding the Assertion**: The assertion states that males suffer from sex-linked disorders more often than females. This is true because males have only one X chromosome (XY), while females have two (XX).

2. **Understanding the Reason**: The reason provided is that traits governed by sex-linked recessive genes are responsible for these disorders. This is also correct. Many sex-linked disorders are caused by recessive alleles located on the X chromosome.

3. **Analyzing the Genetic Mechanism**:
- Males have one X chromosome and one Y chromosome. If the X chromosome carries a recessive allele for a disorder, the male will express that disorder because there is no corresponding allele on the Y chromosome to mask it.
- Females, on the other hand, have two X chromosomes. If one X chromosome carries a recessive allele for a disorder, the other X chromosome can potentially carry a dominant allele that masks the expression of the disorder. This means females can be carriers without showing symptoms.

4. **Conclusion**: Since males have only one X chromosome, they are more likely to express sex-linked disorders than females, who can have one normal allele that prevents the disorder from manifesting. Therefore, both the assertion and the reason are correct, and the reason explains the assertion.

5. **Final Answer**: The correct answer is that both the assertion and the reason are true, and the reason is the correct explanation of the assertion.