Nedthan Johns
New Member
LP: I don't think a jury would believe that some innocent transfer caused a man's DNA to be mixed with JonBenét's blood in her panties
Ned: This is another misconception, that because the blood is mixed with JonBenets this somehow indicates to people that it had to be fresh. Not so, let me explain a little how this works. When DNA testing is conducted on a sample, the sample is cut from the underpants. The sample is then lifted off the cloth using a solution which then lossens the blood that is then extracted from the cloth. To the naked eye, all one could be able to determine is that there is what appears to be blood. There would be no way to know if it was from one or more sources. But once removed through the wash used to extract the blood, any other source of DNA, say even a pin prick of dried old blood, perhaps even not noticable to the naked eye, now becomes loosened, which mixes with the fresh deposited blood of JonBenet Ramsey. Need not have anything to do with the crime, and much more likely got there long before it. Coincidence that it was deposited in the same place JB bleed? Depends on the sample of how much of the cloth they tested. Fact is, once the sample is taken it's almost impossible to determine WHEN the foreign DNA got there. I think a better determination of how the blood could have gotten there is to do more investigation on how the actual panites are produced and just how much they are handled before they are packaged.
http://www.epicentre.com/pdftechlit/105pl102.pdf
Ned: This is another misconception, that because the blood is mixed with JonBenets this somehow indicates to people that it had to be fresh. Not so, let me explain a little how this works. When DNA testing is conducted on a sample, the sample is cut from the underpants. The sample is then lifted off the cloth using a solution which then lossens the blood that is then extracted from the cloth. To the naked eye, all one could be able to determine is that there is what appears to be blood. There would be no way to know if it was from one or more sources. But once removed through the wash used to extract the blood, any other source of DNA, say even a pin prick of dried old blood, perhaps even not noticable to the naked eye, now becomes loosened, which mixes with the fresh deposited blood of JonBenet Ramsey. Need not have anything to do with the crime, and much more likely got there long before it. Coincidence that it was deposited in the same place JB bleed? Depends on the sample of how much of the cloth they tested. Fact is, once the sample is taken it's almost impossible to determine WHEN the foreign DNA got there. I think a better determination of how the blood could have gotten there is to do more investigation on how the actual panites are produced and just how much they are handled before they are packaged.
http://www.epicentre.com/pdftechlit/105pl102.pdf