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Home Q & A Board Biology-Related Homework Help General Biology
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DNA

anonfawkes anonfawkes
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11 years ago
Describe two types of chemical bonds/interactions that the nitrogenous base groups of nucleotides undergo within the DNA double helix.
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CVK
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#1
11 years ago Edited: 11 years ago, CVK
It loses two of these phosphate groups, so that only one phosphate is incorporated into a strand of DNA. When nucleotides are incorporated into DNA, adjacent nucleotides are linked by a phosphodiester bond: a covalent bond is formed between the 5’ phosphate group of one nucleotide and the 3’-OH group of another (see below). In this manner, each strand of DNA has a “backbone” of phosphate-sugar-phosphate-sugar-phosphate. The backbone has a 5’ end (with a free phosphate) and a 3’ end (with a free OH group).
Post Merge: 11 years ago

Source: http://cyberbridge.mcb.harvard.edu/dna_1.html
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