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Biology - DNA hybridisation

DNA hybridisation

If single strands of DNA from different organisms are isolated and
combined, there is a tendency for the strands to bind according to the
base-pairing [1] rule (hybridisation).

The greater the hybridisation the harder it is to dissociate (separate)
the two strands. This would indicate a closer evolutionary relationship
between the species than if there was less hybridisation. A longer period
of time would have allowed differences in DNA to occur.

The genetic relationships between many species, including primates, have
been explored using this technique.

A molecular clock can be calibrated using dates established by dating
fossils.

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Links:
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[1] http://alison.com/#