( ( BACKGROUND ( INFORMATION ( A ( Pedigree chart ) ) ) ) ( ( is ( ( a device ) ( used ( to ( ( trace ( genetic traits ) ) ( through ( ( a number ) ( of generations ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP BACKGROUND) (NNP INFORMATION) (NNP A) (NNP Pedigree) (NN chart)) (VP (VBZ is) (NP (NP (DT a) (NN device)) (VP (VBN used) (S (VP (TO to) (VP (VB trace) (NP (JJ genetic) (NNS traits)) (PP (IN through) (NP (NP (DT a) (NN number)) (PP (IN of) (NP (NNS generations))))))))))) (. .)))
BACKGROUND INFORMATION A Pedigree chart is a device used to trace genetic traits through a number of generations.
(ROOT (S (NP (DT The) (JJ pedigree) (NN chart) (NN model)) (VP (MD can) (VP (VB be) (VP (VBN used) (S (VP (TO to) (VP (VB trace) (NP (JJ genetic) (NN inheritance)))))))) (. .)))
The pedigree chart model can be used to trace genetic inheritance.