( ( Commercial ( breeding programs ) ) ( ( use ( artificial ( ( selection ( -LRB- ( ( ( an ( accelerated ( , ( guided form ) ) ) ) ( of ( natural selection ) ) ) -RRB- ) ) ) ( to ( ( breed ( ( plants and ) animals ) ) ( with ( desired characteristics ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Commercial) (NN breeding) (NNS programs)) (VP (VBP use) (NP (JJ artificial) (NN selection) (PRN (-LRB- -LRB-) (NP (NP (DT an) (VBN accelerated) (, ,) (JJ guided) (NN form)) (PP (IN of) (NP (JJ natural) (NN selection)))) (-RRB- -RRB-)) (S (VP (TO to) (VP (VB breed) (NP (NNS plants) (CC and) (NNS animals)) (PP (IN with) (NP (VBN desired) (NNS characteristics)))))))) (. .)))
Commercial breeding programs use artificial selection (an accelerated, guided form of natural selection) to breed plants and animals with desired characteristics.
(ROOT (S (NP (NNS Humans)) (VP (VBP create) (NP (NP (JJ different) (NNS breeds)) (PP (IN of) (NP (NP (NNS organisms)) (VP (VBG using) (NP (JJ artificial) (NN selection))))))) (. .)))