( ( ( The ( prokaryotic chromosome ) ) ( -LRB- ( ( its genome ) -RRB- ) ) ) ( ( ( ( is ( a ( single ( , ( circular ( , ( double ( stranded ( DNA molecule ) ) ) ) ) ) ) ) ) and ) ( has ( ( bidirectional replication ) ( which ( begins ( at ( ( the origin ) ( of replication ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ prokaryotic) (NN chromosome)) (PRN (-LRB- -LRB-) (NP (PRP$ its) (NNS genome)) (-RRB- -RRB-))) (VP (VP (VBZ is) (NP (DT a) (JJ single) (, ,) (JJ circular) (, ,) (JJ double) (NN stranded) (NN DNA) (NN molecule))) (CC and) (VP (VBZ has) (NP (NP (JJ bidirectional) (NN replication)) (SBAR (WHNP (WDT which)) (S (VP (VBZ begins) (PP (IN at) (NP (NP (DT the) (NN origin)) (PP (IN of) (NP (NN replication))))))))))) (. .)))
The prokaryotic chromosome (its genome) is a single, circular, double stranded DNA molecule and has bidirectional replication which begins at the origin of replication.
(ROOT (S (PP (IN In) (NP (NNS prokaryotes))) (, ,) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN genome)) (VP (VBZ is) (VP (VBN composed) (PP (IN of) (NP (NP (DT a) (JJ single) (, ,) (JJ double-stranded) (NN dna) (NN molecule)) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (DT a) (NN loop) (CC or) (NN circle))))))))) (. .)))