Question:
Complementary base pairs?

Can someone show me what complementary base pairs is?

In this case show some DNA fragment that contains complementary base pairs. (i have no clue)

Answer: A with T: the purine adenine (A) always pairs with the pyrimidine thymine (T)

C with G: the pyrimidine cytosine (C) always pairs with the purine guanine (G)

If "A" is in order on one side of the double helix then "T" will be on the other side of the helix.

If "C" is on one side "G" will be on the other.

This is only for DNA.

If one side reads: ACGGATCAGThe other side will read: TGCCTAGTC

The way I remember it: The A and T letters both have straight lines in them so they go together (on opposite sides) and the G and C are kind of curvy letters so they go together.