( ( In ( ( ( all sexually ) reproducing ) animals ) ) ( ( the ( ( production and ) maturation ) ) ( of ( ( ( ( the ovum ) , ) ( its ( fertilization fertilization ) ) ) , ) ) ) )
(ROOT (FRAG (PP (IN In) (NP (ADJP (NP (DT all) (RB sexually)) (JJ reproducing)) (NNS animals))) (NP (NP (DT the) (NN production) (CC and) (NN maturation)) (PP (IN of) (NP (NP (DT the) (NN ovum)) (, ,) (NP (PRP$ its) (NN fertilization) (NN fertilization)) (, ,))))))
In all sexually reproducing animals the production and maturation of the ovum, its fertilization fertilization,
(ROOT (S (NP (DT All)) (VP (VBZ vertebrates) (VP (VB reproduce) (ADVP (RB sexually)))) (. .)))