The DNA of a cell is analyzed and found to contain 28 percent thymine.What percent of the DNA would by cytosine?

Question

Quizplus · Accepted Answer

Given that DNA has 28 percent thymine, according to the base pairing rule, adenine (A) would also be 28 percent, as adenine pairs with thymine. This leaves 44 percent of the DNA (100% - 56%) to be divided equally between cytosine (C) and guanine (G), as cytosine pairs with guanine. Therefore, cytosine would make up 22 percent of the DNA.

The DNA of a Cell Is Analyzed and Found to Contain