DNA is isolated from a virus and found to contain 27% A, 27% T, 23% C and 23% G. The DNA is likely to be:
A)contaminated with RNA.
B)circular.
C)single stranded.
D)double stranded.

Question

Quizplus · Accepted Answer

The percentages of A, T, C, and G add up to 100%, indicating that the DNA is double stranded. Additionally, single stranded DNA would not have equal percentages of each base since it would not require base pairing. The presence of RNA contamination or the circular nature of the DNA cannot be determined from the information given.

DNA Is Isolated from a Virus and Found to Contain