Assertion. The genetic code is degenerate.
Reason. Most amino acids are coded by more than one codon.

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion**: The assertion states that "The genetic code is degenerate." This means that multiple codons can encode the same amino acid.

2. **Understanding the Reason**: The reason provided is "Most amino acids are coded by more than one codon." This explains the assertion by stating that the degeneracy of the genetic code arises from the fact that a single amino acid can be represented by different codons.

3. **Examples of Degeneracy**: To illustrate this concept, we can look at specific examples:
- The amino acid Phenylalanine is encoded by two codons: UUU and UUC.
- The amino acid Leucine is encoded by four codons: UUA, UUG, CUU, and CUC.
These examples show that multiple codons correspond to the same amino acid, confirming the degeneracy of the genetic code.

4. **Conclusion**: Since the assertion is true and the reason accurately explains the assertion, we conclude that both statements are correct, and the reason is a valid explanation for the assertion.

**Final Answer**: Both the assertion and reason are true, and the reason is the correct explanation for the assertion.

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