Aselmad n tbiolojit i d-yesfaydin s waṭas s yiwen n unelmad deffir ma yeɣra .
Mi teɣra, yiwet n tselmadt n tbiolojit n laṣel arusi teǧǧa yiwen n unelmad deg ubrid-is akken ad d-tessefhem anatomy s umedya-ines. Tekkseḍ-d tiqendyar-is n ddaw tmurt, tebda tettbeggin-d i unelmad-nni n tmeṭṭut-is, tenna-d d acu i d-tella. Anelmad-nni yettili-d s lḥir, syin ad tt-yesfeḍ deg tfekka imi tameṭṭut-nni tessewham-it s waṭas s tfekka-s.