replicate this strand of DNA ATCG

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.