[Margaret Pilkington]

It is a very convoluted argument...and I really am sceptical of it.
Our DNA is our unique blueprint...and the chances of someone having the same DNA and being in the vicinty of a crime is pretty remote, so if you are going to convict purely on DNA evidence then the conviction is flawed, but if, along with other evidence there is DNA evidence a conviction would be more likely to succeed.

And before anyone tells me that identical twins(not fraternal twins) share the same DNA - I know!