Assertion : Hybrid is formed by cross betwveen two organisms that are different in one, or more traits
Reason : Mendel crossed two plants differing in one trait to obtain `F_(1)` plants which is monohybrid cross

Options

A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but Ris not correct explanation of A
C. A is true but R is false
D. A and R are false

Answer

To solve the question regarding the assertion and reason provided, we will analyze both statements step by step.

### Step 1: Analyze the Assertion
**Assertion:** "Hybrid is formed by cross between two organisms that are different in one or more traits."

- **Explanation:** A hybrid is indeed created when two organisms with different traits are crossed. This can involve one trait (monohybrid cross) or multiple traits (dihybrid cross). Therefore, the assertion is true.

### Step 2: Analyze the Reason
**Reason:** "Mendel crossed two plants differing in one trait to obtain F1 plants which is monohybrid cross."

- **Explanation:** Gregor Mendel conducted experiments with pea plants where he crossed plants differing in a single trait (e.g., plant height: tall vs. dwarf). This type of cross is known as a monohybrid cross, which results in the first filial generation (F1) exhibiting a hybrid phenotype. Therefore, the reason is also true.

### Step 3: Determine the Relationship Between Assertion and Reason
- The assertion is true, and the reason is true as well. However, the reason is not a correct explanation of the assertion. While both statements are true, the assertion encompasses a broader definition of hybrids, which can involve one or more traits, whereas the reason specifically refers to Mendel's work with a single trait.

### Conclusion
- **Assertion:** True
- **Reason:** True
- **Explanation Relationship:** The reason is not a correct explanation of the assertion.

### Final Answer
Both the assertion and reason are true, but the reason is not the correct explanation of the assertion.

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