A nucleotide will bind to an A nucleotide in the parental DNA during DNA replication. This is because A pairs with T (and vice versa) and C pairs with G (and vice versa).
Therefore, if one strand of the parental DNA has an A nucleotide, the complementary strand will have a T nucleotide. During DNA replication, the two strands of the parental DNA are separated and each serves as a template for the synthesis of a new complementary strand. Therefore, if the parental DNA has an A nucleotide on one strand, the complementary strand will have a T nucleotide, and the new strand being synthesized will also have a T nucleotide.
