Answer: TGCATATGC.
Step-by-step explanation:
The complementary strand of DNA contains the base sequence that is complementary to the original strand. DNA is composed of four nitrogenous bases: adenine (A), cytosine (C), guanine (G), and thymine (T). In DNA, A is complementary to T, and C is complementary to G.
Given the base sequence ACGGTATCG in the original strand, the complementary strand would contain the base sequence TGCATATGC, as the complementary bases are paired across the center axis of the DNA molecule:
A-T
C-G
G-C
G-C
T-A
A-T
T-A
C-G
So, the complementary strand of the DNA base sequence ACGGTATCG would be TGCATATGC.