( ( ( ( no introns ) ( -LRB- ( ( segments ( of ( genes ( that ( ( do n't ) ( have ( any function ) ) ) ) ) ) ) -RRB- ) ) ) ( in ( bacterial chromosome ) ) ) ( , ( only ( ( exons ( -LRB- ( ( ( ( segment ( of DNA ) ) ( that codes ) ) ( for ( a ( specific ( protein product ) ) ) ) ) -RRB- ) ) ) . ) ) ) )
(ROOT (S (NP (NP (NP (DT no) (NNS introns)) (PRN (-LRB- -LRB-) (NP (NP (NNS segments)) (PP (IN of) (NP (NP (NNS genes)) (SBAR (WHNP (WDT that)) (S (VP (VBP do) (RB n't) (VP (VB have) (NP (DT any) (NN function))))))))) (-RRB- -RRB-))) (PP (IN in) (NP (JJ bacterial) (NN chromosome)))) (, ,) (ADVP (RB only)) (VP (VBZ exons) (PRN (-LRB- -LRB-) (NP (NP (NP (NN segment)) (PP (IN of) (NP (NNP DNA)))) (NP (DT that) (NNS codes))) (PP (IN for) (NP (DT a) (JJ specific) (NN protein) (NN product))) (-RRB- -RRB-))) (. .)))
no introns (segments of genes that don't have any function) in bacterial chromosome, only exons (segment of DNA that codes for a specific protein product).
(ROOT (S (NP (NP (NNS Genes)) (, ,) (CC or) (NP (NP (JJ functional) (NNS units)) (PP (IN of) (NP (NNS chromosomes)))) (, ,)) (VP (VBP determine) (NP (JJ specific) (NNS characteristics)) (PP (IN by) (S (VP (VBG coding) (PP (IN for) (NP (JJ specific) (NNS proteins))))))) (. .)))