Question

In a DNA molecule the ratio of adenine (A) molecule to thymine (T) is 1:1. If in a strand of DNA there are 1 million A molecules, how many T molecules are expected in the same strand?

A)1 million
B)2 million
C)3 million
D)4 million

Answer 1

Since the ratio of A:T is 1:1, for every A, there is a T. 1 million T molecules are expected.

Answer 2

The correct answer is A) 1 Million