Phylogenese; Language origin ; Ambiguity (theory of grammar) ; Ambiguität (Grammatiktheorie) ; Principles and parameters theory; Prinzipien- und Parametermodell; Parametrization ; UG; Universal grammar ; Evolution (theory of) ; Theory of evolution ; Erblichkeit; Heredity; Grammar gene; FOXP2; Language and genetics ; Language change ; Minimalist program; Generative theory of language ; Sprachlernfähigkeit; Sprachfähigkeit; Chimpanzee (linguistic ability) ; Schimpanse (Sprachlernfähigkeit) ; Language aptitude; Spracheignung ; Language variation/Dialectology