( ( ( Develop methods ) ( for ( ( the ( genetic modification ) ) ( of ( small ( and ( large mammals ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Develop) (NP (NNS methods)) (PP (IN for) (NP (NP (DT the) (JJ genetic) (NN modification)) (PP (IN of) (NP (JJ small) (CC and) (JJ large) (NNS mammals)))))) (. .)))
Develop methods for the genetic modification of small and large mammals.
(ROOT (S (NP (JJ Placental) (NNS mammals)) (VP (VBP give) (NP (NN birth)) (PP (TO to) (NP (ADJP (RB relatively) (JJ large)) (NNS fetuses)))) (. .)))