Question

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

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

Answer 1

The correct option is D

Genetic code is nearly universal

The correct option is D.

Explanation of correct option:

1. The genetic code is the mechanism in which an organism uses the order of nucleotides to regulate its development, and the information is held in the exact sequence of nucleotides.
2. It's the same among plants, animals, bacteria, and fungi. The feature of genetic code being universal is utilized in recombinant DNA technology.

Explanation of incorrect options:

Option A:

Genetic code is specific means one codon codes for only one amino acid.

Option B:

Genetic code is unambiguous and specific because one codon codes for only one amino acid.

Option C:

The genetic code is considered to be redundant because many codons can encode the same amino acid residue.

Final answer: "Genetic code is nearly universal" is the features of genetic code that allows bacteria to produce human insulin by recombinant DNA technology.