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<p>A <b>base pair</b> (<b>bp</b>) is a fundamental unit of double-stranded <a href="page.php?w=nucleic_acids">nucleic acids</a> consisting of two <a href="page.php?w=nucleobases">nucleobases</a> bound to each other by <a href="page.php?w=hydrogen_bond">hydrogen bond</a>s.  They form the building blocks of the <a href="page.php?w=DNA">DNA</a> double helix and contribute to the folded structure of both DNA and <a href="page.php?w=RNA">RNA</a>. Dictated by specific <a href="page.php?w=hydrogen_bond">hydrogen bond</a>ing patterns, "<a href="page.php?w=James_Watson">Watson</a>-<a href="page.php?w=Francis_Crick">Crick</a>"</p><p>
<a accesskey="3" href="page.php?w=base_pair&amp;p=2">3.Next</a>
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