Question

The DNA of a certain organism has adenine as 40% of its bases. What percentage of its bases would be guanine?

A) 0%
B) 10%
C) 20%
D) 30%

Answer 1

Answer:

The correct answer is B)10%. See the explanation below, please.

Explanation:

We use the following equivalence, remembering that Adenina pairs with Timina and Guanina with Cytosine:

A=T   ; C=G   A+G=T+C

If A= 40% ----> T=40%

A+G=T+C

40%+G= 40% +C   ---->  40+10=50

G=C=10%