A scientist discovers a virus whose genome consists of an unusual DNA strand from a virus.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.
E)The experiment was contaminated with cockroach DNA.

Question

Quizplus · Accepted Answer

The unequal percentages of adenine and thymine, as well as guanine and cytosine, suggest that the DNA is single-stranded, as Chargaff's rules apply to double-stranded DNA where A pairs with T and G pairs with C.

A Scientist Discovers a Virus Whose Genome Consists of an Unusual