Question

a segment of dna shows bases in this order agt cac gca, complete the corresponding dna strand: tca gtg ___?
a. cgu
b. tgc
c. cgt
d. gca

Explanation:

Step1: Recall DNA - base pairing rules

In DNA, adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).

Step2: Identify the remaining base - pair

The given DNA sequence is AGT CAC GCA. The corresponding strand starts with TCA GTG. The last three - base sequence in the original strand is GCA, so the complementary bases will be CGT.

Answer:

C. CGT