( But ( ( ( ( ( there ( is ( ( no ( causal linkage ) ) ( between ( these ( physical ( and ( behavioral traits ) ) ) ) ) ) ) ) , ) and ) ( therefore ( it ( ( is not ) ( justifiable ( to ( ( attribute ( cultural characteristics ) ) ( to ( genetic inheritance ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (CC But) (S (NP (EX there)) (VP (VBZ is) (NP (NP (DT no) (JJ causal) (NN linkage)) (PP (IN between) (NP (DT these) (JJ physical) (CC and) (JJ behavioral) (NNS traits)))))) (, ,) (CC and) (S (ADVP (RB therefore)) (NP (PRP it)) (VP (VBZ is) (RB not) (ADJP (JJ justifiable) (S (VP (TO to) (VP (VB attribute) (NP (JJ cultural) (NNS characteristics)) (PP (TO to) (NP (JJ genetic) (NN inheritance))))))))) (. .)))
But there is no causal linkage between these physical and behavioral traits, and therefore it is not justifiable to attribute cultural characteristics to genetic inheritance.
(ROOT (S (NP (JJ Certain) (NNS characteristics)) (VP (VBP are) (ADVP (RB frequently)) (VP (VBN inherited) (ADVP (RB together)) (PP (RB because) (IN of) (ADJP (JJ linkage))))) (. .)))