Question

if one strand of a dna molecule has the sequence gtcatg, what is the sequence of the strand it was replicated from? atcgta uagcau cagtac gcatga

Explanation:

DNA replication follows base - pairing rules. Adenine (A) pairs with Thymine (T), and Guanine (G) pairs with Cytosine (C). Given the sequence GTCATG, the complementary strand (the strand it was replicated from) will have the bases that pair with each of these. G pairs with C, T with A, C with G, A with T, T with A, G with C.

Answer:

C. CAGTAC