The covalent bond
that attaches a phosphate
group to a molecule
by way of an oxygen
atom (which, out of two possible bonds, is bonded to the phosphate group on one side and the rest of the molecule on the other). This is the type of bond
that links the nucleotide
subunits together to make a DNA
From the BioTech Dictionary at http://biotech.icmb.utexas.edu/. For further information see the BioTech homenode.