If a strand of DNA has the sequence CGTAA,the mRNA made from this molecule will have the sequence
A) CGTAA.
B) GCUTT.
C) TAGCC.
D) GCAUU.

Question

Quizplus · Accepted Answer

The sequence of mRNA is determined by the complementary base pairing with the DNA strand, with the exception of substituting T for U. So the mRNA sequence of CGTAA will be GCAUU. Choice A is incorrect because it is the same sequence as the DNA. Choice B is incorrect because there is no such nucleotide as U in DNA or RNA. Choice C is incorrect because it is the complementary sequence on the DNA, but the mRNA sequence would be the complementary sequence with U instead of T.

If a Strand of DNA Has the Sequence CGTAA,the MRNA