if genetic code is tetraplet then what is the possible number of codons will contain 20 types of amino acids ?

Options

A. 261
B. 64
C. 256
D. 43

Answer

To solve the problem of determining the possible number of codons if the genetic code is tetraplet and there are 20 types of amino acids, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Codons**:
- Codons are sequences of nucleotides that correspond to specific amino acids. In the standard genetic code, a codon is typically a triplet of nucleotides.

2. **Identifying the Base Pairs**:
- There are four types of nucleotide bases: Adenine (A), Thymine (T), Cytosine (C), and Guanine (G).

3. **Calculating Codons for a Triplet Code**:
- In a triplet code, the total number of codons can be calculated using the formula:
\[ \text{Number of Codons} = 4^{n} \]
where \( n \) is the number of nucleotides in the codon. For a triplet code, \( n = 3 \):
\[ \text{Number of Codons} = 4^{3} = 64 \]

4. **Applying the Tetraplet Condition**:
- In the case of a tetraplet code, we will use the same formula but with \( n = 4 \):
\[ \text{Number of Codons} = 4^{4} \]
Now, calculating this gives:
\[ 4^{4} = 256 \]

5. **Conclusion**:
- Therefore, if the genetic code is tetraplet, the possible number of codons that can be formed is 256.

### Final Answer:
If the genetic code is tetraplet, then the possible number of codons will be **256**.

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