AQA DNA HybridisationWatch
dna of one of the organisms radioactively labelled. The other dna is not labelled
dna strands heated to separate the strands
single strands of dna from the two organisms mixed
dna fragments that are 50% labelled are selected(because they consist of one strand from each organism)
dna fragments heated, the temperature at which the two strands separate is noted
the higher the temperature, the more complementary bases between dna of two organisms so the more hydrogen bonds between the two strands
and so the more closely related the two organisms are
Semi-conservative replication takes part during interphase.
DNA hybridisation is the process whereby scientists can see how similar two strands of DNA from different organisms are.