Assertion :- Multiple alleles can be observed or studies in an organism, when its complete genome is known.
Reason :- Multiple alleles is a rare phenomenon.

Options

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

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: "Multiple alleles can be observed or studied in an organism when its complete genome is known."

- **Evaluation**: This statement is incorrect. Multiple alleles can be studied without needing to know the complete genome of an organism. A classic example is the ABO blood group system in humans, which involves three alleles: Ia, Ib, and Io. These can be studied through phenotypic expression rather than requiring the entire genome sequence.

### Step 2: Analyze the Reason
The reason states: "Multiple alleles is a rare phenomenon."

- **Evaluation**: This statement is also incorrect. Multiple alleles are not rare; they are quite common in various organisms. Many traits are governed by multiple alleles, and the ABO blood group is just one example of this phenomenon.

### Step 3: Conclusion
Both the assertion and the reason are false. Therefore, the correct answer is that both the assertion and reason are false.

### Final Answer
Both the assertion and reason are false.

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