Biology Reference
In-Depth Information
Figure 12.1.
The double-stranded DNAstructure.
The distance between turns of the helix is called a “pitch” which
is3.4 nm long.
1 pitch (3.4 nm)
=
minorgroove length
+
major groove length
The double-stranded DNA molecule also has an antiparallel
nature because the two strands have opposite directions for the
linking of a 3
carbon atom with a 5
carbon atom. According to
