DNA is negatively charged, due to the phosphate groups in its phosphate-sugar backbone, so histones bind with DNA very tightly. The basic repeating structural (and functional) unit of chromatin is ...

The double-stranded DNA that results from this pattern of bonding looks much like a ladder with sugar-phosphate side supports and base-pair rungs. Note that because the two polynucleotides that ...

DNA and RNA strands vary in length from less than two dozen base pairs to more than 200 million. Nucleotides are the ...

In DNA, 2-deoxy-D-ribose molecules link together through phosphate groups to form a sugar-phosphate backbone. This backbone provides the structural framework for DNA, holding the nitrogenous bases ...