Re: dailymail reports that Jack the Ripper's identity has been uncover
Exactly. Which is why it would be absolutely fascinating if this result could be replicated and verified.
Agreed. Not enough to convict but certainly gives 'probable cause'.
Whoa Nellie
Just to clarify, mitochondrial DNA from bones (usually teeth) holds up pretty well. It's the "wet DNA" such as blood and semen that degrades.

No, it really doesn't, because the shawl has been handled by many people other than the killer and the victim. There's no way to narrow the DNA donors down to just those two.
Kosminski doesn't have any other reason to come into contact with that shawl (particularly if it's his semen). May not be enough to convict him, but it's certainly enough for historical purposes.
Agreed. Not enough to convict but certainly gives 'probable cause'.
Whoa Nellie