What does the term “recombinant DNA” refer to in biotechnology?

JAMB Agricultural Science 2023 287 views
Source: JAMB · 2023

What does the term “recombinant DNA” refer to in biotechnology?

  1. DNA extracted from ancient fossils
  2. DNA modified to contain genes from different organisms ✓
  3. DNA replicated using polymerase chain reaction (PCR)
  4. DNA synthesized in a laboratory
Explanation

Recombinant DNA contains genes from different organisms combined artificially. Scientists cut DNA from one organism and insert it into another to create new genetic combinations.

Agricultural applications: pest-resistant crops (Bt genes from bacteria), herbicide tolerance, improved nutritional content. This enables traits impossible through conventional breeding.

Different from: fossil DNA (ancient), PCR (copying), or synthesis (artificial creation). Recombinant specifically means combining genes from different sources.

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