A scientist discovers a virus whose genome consists of an unusual DNA strand.She finds the following percentage of bases: 23% A,12% T,30% G,and 35%C.Which of the following best explains these results?
A)The bases are not purines or pyrimidines.
B)Chargaff was wrong.
C)Linus Pauling's model of DNA was correct.
D)The DNA in this virus is single-stranded.

Question

Quizplus · Accepted Answer

In double-stranded DNA, Chargaff's rules state that the amount of adenine (A) equals thymine (T), and the amount of guanine (G) equals cytosine (C). The unequal percentages of bases suggest that the DNA is single-stranded, where these rules do not apply.

A Scientist Discovers a Virus Whose Genome Consists of an Unusual