( ( The approach ) ( ( has ( been ( to ( use ( ( ( single ( copy insertions ) ) ( of ( DNA ( encoding ( reporter ( protein ( and ( operon fusions ) ) ) ) ) ) ) ) ( of ( genes ( in ( the ( regulatory pathway ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN approach)) (VP (VBZ has) (VP (VBN been) (S (VP (TO to) (VP (VB use) (NP (NP (JJ single) (NN copy) (NNS insertions)) (PP (IN of) (NP (NNP DNA) (NN encoding) (NN reporter) (NN protein) (CC and) (NN operon) (NNS fusions))) (PP (IN of) (NP (NP (NNS genes)) (PP (IN in) (NP (DT the) (JJ regulatory) (NN pathway))))))))))) (. .)))
The approach has been to use single copy insertions of DNA encoding reporter protein and operon fusions of genes in the regulatory pathway.
(ROOT (S (NP (DT A) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN operon)) (VP (VBZ consists) (PP (IN of) (NP (NP (QP (CD one) (CC or) (JJR more)) (NNS genes)) (SBAR (WHNP (WDT that)) (S (VP (VBP encode) (SBAR (S (NP (DT the) (NNS proteins)) (VP (VBD needed) (PP (IN for) (NP (DT a) (JJ specific) (NN function)))))))))))) (. .)))