( ( ( ( ( These sperm ) ( serve ( to ( activate ( the ( egg ( to ( ( ( complete meiosis ) and ) ( proceed ( with development ) ) ) ) ) ) ) ) ) ) but ) ( ( the sperm ) ( contribute ( no ( genetic information ) ) ) ) ) . )
(ROOT (S (S (NP (DT These) (NN sperm)) (VP (VBP serve) (S (VP (TO to) (VP (VB activate) (NP (DT the) (NN egg) (S (VP (TO to) (VP (VP (VB complete) (NP (NNS meiosis))) (CC and) (VP (VB proceed) (PP (IN with) (NP (NN development))))))))))))) (CC but) (S (NP (DT the) (NN sperm)) (VP (VBP contribute) (NP (DT no) (JJ genetic) (NN information)))) (. .)))
These sperm serve to activate the egg to complete meiosis and proceed with development but the sperm contribute no genetic information.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (DT a) (NN sperm)) (VP (VBZ penetrates) (NP (DT the) (NN egg))))) (, ,) (NP (PRP it)) (VP (VBZ triggers) (NP (DT the) (NN egg) (S (VP (TO to) (VP (VB complete) (NP (NNS meiosis))))))) (. .)))