Assertion:Mendel successfully formulated the laws of heredity.
Reason.Mendel did not perform the study of one character at a time.

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion**: The assertion states that "Mendel successfully formulated the laws of heredity." This is true as Gregor Mendel is known as the father of genetics and he established foundational principles of heredity through his experiments with pea plants.

2. **Understanding the Reason**: The reason provided is "Mendel did not perform the study of one character at a time." This statement is incorrect. Mendel initially focused on one character at a time in his experiments, which is crucial for establishing the laws of inheritance.

3. **Mendel's Experiments**: Mendel conducted experiments using pea plants, where he studied various traits such as plant height, pod shape, and seed color. He performed monohybrid crosses (studying one trait at a time) before moving on to dihybrid crosses (studying two traits simultaneously).

4. **Conclusion**: Since the assertion is true and the reason is false, the relationship between the assertion and reason is that the reason does not support the assertion. Therefore, the correct answer is that the assertion is true, but the reason is incorrect.

**Final Answer**: The assertion is true, but the reason is false.

---