Prince: DNA Shuts Down Long-Lost 'Son'

Prince is NOT the father of the federal prisoner who claimed he was the singer's long-lost son ... according to Maury Povich DNA testing.

Sources with direct knowledge of the case tell us the DNA test returned a 0.0% chance that Carlin Q. Williams is Prince's spawn. In docs, Carlin said his mother met Prince in 1976 and knocked her up in a Kansas City hotel.

Carlin -- in prison for gun possession -- is one of several people who've come out of the woodwork claiming blood relations. Another woman, Taz Walker, also claims Prince was her pops.

It's unclear what the status is of her case.