( ( ( The laws ) ( of heredity ) ) ( ( explain ( why ( ( different traits ) ( herited ( by ( offspring ( of ( the ( same parents ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS laws)) (PP (IN of) (NP (NN heredity)))) (VP (VBP explain) (SBAR (WHADVP (WRB why)) (S (NP (JJ different) (NNS traits)) (VP (VBD herited) (PP (IN by) (NP (NP (NN offspring)) (PP (IN of) (NP (DT the) (JJ same) (NNS parents))))))))) (. .)))
The laws of heredity explain why different traits herited by offspring of the same parents.
(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)))))))))) (. .)))