A) Genetic engineering works only on animals and has not yet been successfully used on plants.
B) There are no risks associated with DNA technology.
C) The first step in PCR is heating which is used to separate both the strands of target DNA.
D) DNA from one organism will not bond to DNA from another animal.
Correct Answer: C
Solution :
[c] Statement [c] is correct. The first step in PCR (polymerase chain reaction) is heating which is used to separate both the strands of target DNA. PCR is a laboratory technique used to make multiple copies of a segment of DNA. PCR is very precise and can be used to amplify, or copy, a specific DNA target from a mixture of DNA molecules.
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