Question

In the nucleus, the cell copies the DNA blueprint to RNA. Like DNA, RNA has four nitrogen bases, but in RNA, the base ______ replaces the base thymine.

A) alanine
B) guanine
C) uracil
Eliminate
D) valine

Answer 1

DNA has a nitrogenous base called Thymine, but RNA doesn't. Instead, RNA has Uracil. So, the answer is A.

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