A template DNA strand contains 30% A, 20%T, 27% G, and 23% C. The RNA transcript contains:
A)30% A, 20% T, 27% G, and 23% C.
B)30% T, 20% A, 27% C, and 23% G.
C)30% U, 20% A, 27% C, and 23% G.
D)30% A, 20% U, 27% G, and 23% C.

Question

Quizplus · Accepted Answer

During transcription, DNA is used as a template to synthesize RNA. RNA is made of nucleotides that are similar to DNA nucleotides, but with uracil (U) instead of thymine (T). Therefore, the RNA transcript will have the same percentages of adenine (A), guanine (G), and cytosine (C) as the template DNA strand, but with uracil instead of thymine. Hence, the RNA transcript will have 30% U, 20% A, 27% C, and 23% G.

A Template DNA Strand Contains 30% A, 20%T, 27% G