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Ancient Lake non-isolated pothole River where pupfish can swim from pothole to pothole. isolated potholes Hypothesis is that there was an ancient lake filling a basin. Current Lake The lake dried up leaving potholes where pupfish live now. Isolated potholes do not connect and non isolated potholes are connected by rivers.
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PCR Polymerase Chain Reaction
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Allows us to amplify a particular segment of DNA- over and over. Forensics- amplify tiny amount until large enough to use.
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Ingrediants Template DNA Taq Polymerase Primers dNTPs Buffer Magnesium Ions
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http://www.youtube.com/watch?v=2KoLnIwoZKU
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