

MCQOPTIONS
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1. |
In DNA, there are |
A. | four bases known as adenine, guanine, thymine and cytosine |
B. | five bases known as adenine, guanine, thymine, tryptophan and cytosine |
C. | only two bases known as adenine and cytosine |
D. | three bases known as adenine, guanine and cytosine |
Answer» B. five bases known as adenine, guanine, thymine, tryptophan and cytosine | |