A quick "dirty" prep is usually sufficient, while some genotyping
may work better with highly purified DNA. Determine empirically which protocol works best for your genotyping.
1. NaOH extraction (quick
"dirty" DNA preparation). Reference: Truett GE et al. 2000. Biotechniques 29(1):52-54
l Cut 2mm
of tail and place into an Eppendorf tube or 96-well plate.
l Add 75ul 25mM NaOH / 0.2 mM EDTA.
l Place in thermocycler at 98oC for 1 hour, then reduce the temperature to 15ˇăC until ready to proceed to the next step.
l Add 75ul of 40 mM Tris HCl (pH 5.5).
l Centrifuge at 4000rpm for 3 minutes.
l Take an aliquot for PCR (use 2 ul undiluted, or 2 ul of a 1:100 dilution/reaction).
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