To replicate a strand of DNA, you would complement the bases according to the base pairing rules: Adenine (A) pairs with Thymine (T), and Cytosine (C) pairs with Guanine (G).
Given the DNA strand:
Original Strand: ATCG
The complementary strand would be:
Complementary Strand: TAGC
So, the replication of the DNA strand ATCG would yield the complementary strand TAGC.