( ( is ( ( the ( evolutionary process ) ) ( ( by which ) ( ( new ( biological species ) ) arise ) ) ) ) . )
(ROOT (S (VP (VBZ is) (NP (NP (DT the) (JJ evolutionary) (NN process)) (SBAR (WHPP (IN by) (WHNP (WDT which))) (S (NP (JJ new) (JJ biological) (NNS species)) (VP (VBP arise)))))) (. .)))
is the evolutionary process by which new biological species arise.
(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)))) (. .)))