A transgenic organism is one that
Correct answer: D. carries a functional gene deliberately transferred from another species
- A. has been cloned from an adult cell
- B. has twice the normal number of chromosomes
- C. has been produced by crossing two closely related species
- D. carries a functional gene deliberately transferred from another species
Explanation
Transgenic animals and plants express a foreign gene, examples being goats that secrete a human clotting factor in their milk and crops given a bacterial gene for pest resistance. The change is heritable because the gene is present in every cell including the gametes. A clone carries no foreign gene at all, which is why cloning and genetic modification are separate ideas.
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