describe how gene probing works
DNA of interest denatured, single stranded.
Single stranded DNA segment complementary to what we want to find is artificially synthesised.
Anneals with segment of interest.
Fluorescently/radioactively labelled allowing us to find it.
whats in situ hybridisation
done in place in chromosomes (fluorescent = FISH)
describe southern blotting
electrophoresis denaturing agent salt solution -> nylon -> paper towel -> weight fragments get stuck on nylon nylon put in solution with gene probe