1st Nov '25

DNA

A DNA molecule has two coiled to form a double , the strands linked by a series of paired .

There are 4 bases:

Adenine pairs with and Cytosine pairs with

DNA controls the joining together of to make a specific in a cell. It is the order of bases in a section of DNA decides the order of in the and hence what protein it is and what it does.

Create a double chain of matched base pairs

3D DNA Model