Unraveling the
Mystery of Your Genes

 Before cells divide to produce the next generation of cells, they must replicate (make a copy of) the DNA. First, proteins help to unzip sections of the double-stranded DNA

 Then, following strict base-pairing rules, free (available) bases in the cell are linked together with their matching bases on the two original strands

 Finally, two duplicate codebooks are made. So when the cell divides, each new cell gets an identical DNA codebook