Which of the following of genetic code does allow bacteria of produce human insulin by recombinant DNA technology?

Options

A. Genetic code is not ambiguous
B. Genetic code is redundant
C. Genetic code is nearly universal
D. Genetic code is specific

Answer

To determine which aspect of the genetic code allows bacteria to produce human insulin through recombinant DNA technology, we can analyze the options provided in the question step by step.

### Step-by-Step Solution:

1. **Understanding the Genetic Code**: The genetic code consists of sequences of nucleotides in DNA and RNA that dictate the synthesis of proteins. Each set of three nucleotides (codon) corresponds to a specific amino acid.

2. **Evaluating the Options**:
- **Non-ambiguous**: This means that each codon specifies only one amino acid. While this is true, it does not specifically relate to the ability of bacteria to produce human insulin.

- **Redundant**: This refers to the fact that multiple codons can code for the same amino acid. While this is a characteristic of the genetic code, it does not directly explain how bacteria can produce human insulin.

- **Nearly Universal**: This means that the genetic code is largely the same across different organisms, including bacteria and humans. For example, the codon AUG codes for methionine in both humans and bacteria. This universality allows bacteria to understand and utilize human genes when they are inserted into their DNA.

- **Specific**: This refers to the unique correspondence between codons and amino acids. While specificity is important, it does not address the compatibility of bacterial systems with human insulin production.

3. **Conclusion**: The key factor that allows bacteria to produce human insulin is the nearly universal nature of the genetic code. This allows the bacterial machinery to read human genes and synthesize human proteins, such as insulin.

### Final Answer:
The correct option is **"The genetic code is nearly universal."**

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