简介:CoriolisForceisthePrimaryCauseofRight-leftAsymmetry.Ananimalmov-ingontheNorthernHemispherebearsCoriolisforcewhichisperpendiculartothevelocityofthemotionandwhichpointstotherightoftheanimal.Thisright-direct-ingforcewillbedenotedbyFc.Itactsthroughoutthelifeofananimal;indeed,throughoutthelivesofallofitsancestors,fromthefetaltoadultstagesineverypartofthebody.Let’sconsiderfirstabodywithtwolegsslidingonearth.Therightlegwouldsustainalargerforcethantheleftleg.Acomplexsystemofmus-