Will red hair and Rh- blood go extinct? Rhesusnegative.net 10 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?