Assertion: dna | /r/HasProperty | synthesized in the presence of modified bases
Facets:
Source sentences:
text: Either chemical reactions are carried out which specifically cleave the sugar-phosphate bond at sites which contain a certain base, or DNA is synthesized in the presence of modified bases that cause termination of synthesis after the incorporation of a certain base.
text: There are two general approaches for determining DNA sequence: either chemical reactions are carried out that specifically cleave the sugar–phosphate bond at sites that contain a certain base, or DNA is synthesized in the presence of modified bases that cause termination of DNA synthesis after the incorporation of a certain base.