Mayi e ku nfudiilo

a Mu mukanda waye (The Descent of Man) Charles Darwin baadi mutemune bipindji bya mbidi bibaadi amono bu “bishi na muulo.” Umune a ku balongi baye baadi mushinkamishe shi kwi “tupindji twa mbidi tupela” twi bungi tushi na mudimo mu mbidi ya muntu mpa na apendice, na thymus.