Will red hair and Rh- blood go extinct? Rhesusnegative.net 9 months ago Edward Robert Hughes (1851–1914)The Princess Out of School The History of Red Hair Is Rh negative blood headed for extinction? Rh negative frequencies in Australia DROPPED from 19% to 14% Rh negative percentages lower than previously expected Do Rh- Women have a higher Sex Drive? Why did the Neanderthals go extinct?