Ma'anar ƙamus na "sashen nazarin halittu" zai zama sashe a cikin kwaleji ko jami'a wanda ya ƙware a cikin nazarin halittu, gami da nazarin halittu masu rai, tsarinsu na zahiri, tsarin sinadarai, hulɗar kwayoyin halitta, da juyin halitta. Wannan sashe zai kasance yana ba da kwasa-kwasan, gudanar da bincike, da ɗaukar malamai da masu bincike waɗanda suka ƙware a fannoni daban-daban na ilmin halitta kamar microbiology, genetics, ecology, and biochemistry.