( ( ( ( ( In ( general terms ) ) ( , ( ( biological evolution ) ( is ( ( ( the process ) ( of change ) ) ( ( by which ) ( ( new species ) ( develop ( from ( ( preexisting species ) ( over time ) ) ) ) ) ) ) ) ) ) ) ; ) ( ( in ( genetic terms ) ) ( , ( evolution ( can ( be ( ( defined ( as ( ( any change ) ( in ( ( the frequency ) ( of ( alleles ( in ( populations ( of ( organisms ( from generation ) ) ) ) ) ) ) ) ) ) ) ) ( to generation ) ) ) ) ) ) ) ) . )
(ROOT (S (S (PP (IN In) (NP (JJ general) (NNS terms))) (, ,) (NP (JJ biological) (NN evolution)) (VP (VBZ is) (NP (NP (DT the) (NN process)) (PP (IN of) (NP (NN change))) (SBAR (WHPP (IN by) (WHNP (WDT which))) (S (NP (JJ new) (NNS species)) (VP (VBP develop) (PP (IN from) (S (VP (VBG preexisting) (NP (NNS species)) (PP (IN over) (NP (NN time)))))))))))) (: ;) (S (PP (IN in) (NP (JJ genetic) (NNS terms))) (, ,) (NP (NN evolution)) (VP (MD can) (VP (VB be) (VP (VBN defined) (PP (IN as) (NP (NP (DT any) (NN change)) (PP (IN in) (NP (NP (DT the) (NN frequency)) (PP (IN of) (NP (NP (NNS alleles)) (PP (IN in) (NP (NP (NNS populations)) (PP (IN of) (NP (NP (NNS organisms)) (PP (IN from) (NP (NN generation))))))))))))) (PP (TO to) (NP (NN generation))))))) (. .)))
In general terms, biological evolution is the process of change by which new species develop from preexisting species over time; in genetic terms, evolution can be defined as any change in the frequency of alleles in populations of organisms from generation to generation.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NP (NNS changes)) (PP (IN in) (NP (NP (DT the) (NNS genes)) (PP (IN of) (NP (DT a) (NN species)))))) (VP (VBP result) (PP (IN in) (NP (DT a) (JJ new) (NN species)))))) (, ,) (NP (DT the) (NN process)) (VP (VBZ is) (VP (VBN called) (NP (JJ biological) (NN evolution)))) (. .)))