Question

if the sequences of bases in an mrna transcript reads aug, what did the original dna triplet sequence read? (1 point)
tac
aug
uac
gua

Explanation:

In transcription, mRNA is synthesized from a DNA template strand. Adenine (A) in DNA pairs with uracil (U) in mRNA, thymine (T) in DNA pairs with adenine (A) in mRNA, cytosine (C) with guanine (G), and guanine (G) with cytosine (C). Given the mRNA sequence AUG, the original DNA triplet (template - strand) would have the complementary bases. So, A in mRNA pairs with T in DNA, U with A, and G with C. The original DNA triplet is TAC.

Answer:

A. TAC