A researcher analyzes a nucleic acid sample. After looking only at its nucleotide composition, he decisively concludes that this sample represents single-stranded DNA and not another form of nucleic acid. Which of the following compositions most likely represents this sample?

A. 17% A, 17% T, 33% G, 33% C
B. 29% A, 14% U, 11% G, 46% C
C. 4% A, 4% U, 46% G, 46% C
D. 12% A, 12% T, 30% G, 46% C

D. 12% A, 12% T, 30% G, 46% C

Explanation:

Both option A and D could represent single strand DNA but since A has equal proportion of A and T/G

C could also represent double stranded DNA.

The best option here is option D.

materials water oxygen those are the things i can think of in this moment.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."