DNA Replicating Itself
A simplified representation of a DNA molecule separating to form two new
To reproduce, a cell must copy and transmit its genetic information (DNA)
to all of its progeny.
To do so, DNA replicates, following the process of semiconservative
replication. Each strand of the original molecule acts as a template
for the synthesis of a new complementary DNA molecule.
The two strands of the double helix are first separated by enzymes. With
the assistance of other enzymes, spare
parts available inside the cell are bound to the individual strands following
the rules of complementary base pairing: adenine
(A) to thymine (T) and guanine (G) to cytosine (C).
Two strands of DNA are obtained from one, having produced two daughter molecules
which are identical to one another and to the parent molecule.