I will praise thee; for I am fearfully and wonderfully made.. Psalm 139:14 
These structures appear more frequently when cells are very active,
such as during cell division.
"Most people know of the double helix (twisted ladder) structure of DNA, discovered in 1953. Scientists in the 1990s found another structure in the test-tube, called an ‘i-motif’. Now scientists have shown that this structure exists inside human cells. “The i-motif is a four-stranded ‘knot’ of DNA”, explained Marcel Dinger, one of the scientists involved.
The structures also seem to relate to the
control of genes, occurring in the regions of the DNA that determine if a
gene is to be ‘read’ by the cell. In other words, they almost certainly
have an important function." CMI
