<□>I□manycul□ur□sandsocieties,incestisconsideredtabo□andisst□ict□y□or□id□□□.Theidea□from□nticorsexualrelationship□bet□eensi□lingsis□e□withshock,di□gust,a□d□oralo□trage.Thetab□> □n□anycu□tu□esa□dsocie□ies,incestisconsider□dtab□oand□sstrictly□orbi□den.Theideaofromanticorse□ual□elationshi□sbetwee□sibl□ngsisme□with□h□ck□disgust□and□ora□outrage.Thetab□><□>Inm□nyc□□tures□ndsocieties□incestisconsidere□ta□ooandisstrictlyf□rb□□den.Th□ide□ofrom□nticor□exualrelationshipsbetwee□sib□in□sismet□iths□□ck,dis□□st,andmoralo□trag□.Thet□□