( ( ( heredity ( ( ( The handing ) down ) ( of ( certain traits ) ) ) ) ( from ( parents ( to ( their offspring ) ) ) ) ) . )
(ROOT (NP (NP (NN heredity)) (PP (ADVP (NP (DT The) (NN handing)) (RB down)) (IN of) (NP (JJ certain) (NNS traits))) (PP (IN from) (NP (NP (NNS parents)) (PP (TO to) (NP (PRP$ their) (NN offspring))))) (. .)))
heredity The handing down of certain traits from parents to their offspring.
(ROOT (S (NP (NNP Heredity)) (VP (VBZ is) (NP (NP (DT the) (NN science)) (PP (IN of) (SBAR (WHADVP (WRB how)) (S (NP (NNS traits)) (VP (VBP are) (VP (VBN passed) (PP (IN from) (NP (NNS parents))) (PP (TO to) (NP (NN offspring)))))))))) (. .)))