( However ( , ( ( ( ( ( many ( of ( the ( gene fragments ) ) ) ) , ) or ) ( ( clones , ) ( that ( compose ( the ( DNA array ) ) ) ) ) ) ( ( ( do not ) ( correspond ( to ( known genes ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB However)) (, ,) (NP (NP (JJ many)) (PP (IN of) (NP (DT the) (NN gene) (NNS fragments))) (, ,) (CC or) (NP (NP (NNS clones)) (, ,) (SBAR (WHNP (WDT that)) (S (VP (VBP compose) (NP (DT the) (NN DNA) (NN array))))))) (VP (VBP do) (RB not) (VP (VB correspond) (PP (TO to) (NP (JJ known) (NNS genes))))) (. .)))
However, many of the gene fragments, or clones, that compose the DNA array do not correspond to known genes.
(ROOT (S (NP (NNS Genes)) (VP (VBP are) (VP (VBN composed) (PP (IN of) (NP (NN dna))))) (. .)))
Genes are composed of dna.