Trick: Remember nitrogen base paring in a DNA

There are 4 base pairs:

* Adenine
* Thymine
* Cytosine
* Guanine

And paring is as follows:

Adenine-Thymine
Cytosine-Guanine

The simplest way to remember the paring is by the code, this wil never confuse you ever ;)
"GCAT"

P.S. The cat image is used just to add colors to the blog :)