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Project:Sex typing with amelogenin: Difference between revisions
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Project:Sex typing with amelogenin (view source)
Revision as of 23:55, 24 April 2014
, 24 April 2014→11th March 2012
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== 11th March 2012 == | == 11th March 2012 == | ||
Two separate DNA extraction protocols: Chelex and meat tenderiser. | |||
Chelex: rinse mouth with salt. Spit small amount of liquid into tube. Add 500ul Chelex. Incubate at 98 degrees for 6 minutes. Centrifuge for 5 minutes. Take 10ul supernatant. | |||
[[/ | Meat tenderiser: rinse mouth with salt. Spit small amount of liquid into tube. Add equal amount of detergent. Vortex for 30 seconds. Add a few grains meat tenderiser. Vortex for 30 seconds. Allow to sit for several seconds. Add a small amount of rubbing alcohol. Observe DNA strands precipitating out of solution. Take 10ul of liquid and DNA strands. Incubate at 70 degrees for several minutes. Add 5 ul water. | ||
PCR was set at D=94 degrees, 1 minute; A=57 degrees, 1 minute; E = 72 degrees, 1 minute. I used 5 ul of sample, 6 ul of primers, 12.5 ul of Taq master mix. | |||
Result was visualised on 1% agarose gel stained with 2ul/40ml of ethidium bromide under 300nm UV. DNA ladder was visible. Both samples showed a faint blur running ahead of the ladder and no other information. | |||
I conclude that the DNA extraction technique is inadequate. | |||
Detailed thoughts on what might be going wrong: [[/results-20120311]] | |||
== 21st March 2012 : Success!! == | == 21st March 2012 : Success!! == | ||
