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Answer: 3. Genetic code is nearly universal

Key idea: The universality of the genetic code lets one organism read another's genes.

Since the same codons specify the same amino acids in almost all organisms, a human insulin gene inserted into bacteria is translated into the correct protein. Redundancy and specificity are features of the code but are not what allows cross-species expression.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
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