Are all blacks descended from whites?

Paul Crowley (
Fri, 10 Nov 95 21:43:47 GMT

Today's London Times has a brief report of a lecture by Dr Charles
Gilbert of Cambridge (UK) University where he said that h.s.s.
originated 100kya in northern latitudes. An ice age forced [sic]
a movement south 70kya whereupon the black races sprang off.

His argument is that there are four biochemically different forms
of dark pigmentation in different populations so modern man could
not have been black from the beginning.

Any comments?