SAT Subject Biology Practice Question 110: Answer and Explanation

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Question: 110

20. A group of biologists wishes to isolate an antifreeze gene found in a cold-water species of fish and introduce it into the genome of a different organism. Which of the following techniques must they use?

A. Cloning
B. Artificial selection
C. Selective breeding
D. Genetic engineering
E. Sexual recombination

Correct Answer: D

Explanation:

Genetic engineering is the only listed technique that allows for the combination of genetic information between unrelated organisms. Selective breeding and artificial selection are changes made to a single species. Cloning will also only involve genes present in parents and not enable the integration of a gene from an alternate species. Sexual recombination, again, can also only occur within the same or closely related species.

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