( ( The process ) ( ( begins ( with ( ( the ( many thousands ) ) ( of ( genes ( found ( in ( ( each cell ) ( of ( the ( human body ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN process)) (VP (VBZ begins) (PP (IN with) (NP (NP (DT the) (JJ many) (NNS thousands)) (PP (IN of) (NP (NP (NNS genes)) (VP (VBN found) (PP (IN in) (NP (NP (DT each) (NN cell)) (PP (IN of) (NP (DT the) (JJ human) (NN body))))))))))) (. .)))
The process begins with the many thousands of genes found in each cell of the human body.
(ROOT (S (NP (DT A) (JJ single) (JJ human) (NN body) (NN cell)) (ADVP (RB typically)) (VP (VBZ contains) (NP (NP (NNS thousands)) (PP (IN of) (NP (NNS genes))))) (. .)))
A single human body cell typically contains thousands of genes.