Question Detail

BIO 101 BIO 101 Past Questions Objective Question

Question

If a DNA strand has nitrogenous base sequence ATTGCC, the mRNA will have
Options
A ATTGCA
B UGGACC
C UAACGG
Correct Answer
D ATCGCC
Correct Answer

Option C is the correct answer.

Detailed Explanation

During transcription, mRNA is synthesized complementary to the DNA template strand, with Uracil (U) replacing Thymine (T). So, DNA A -> U, T -> A, T -> A, G -> C, C -> G, C -> G. This gives UAACGG.

Hint

Remember base pairing rules: A with U, T with A, G with C, and C with G.

Question Info