( ( The survivors ) ( ( ( ( breed and ) pass ) ( on ( ( the ( resistance trait ) ) ( to ( their offspring ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS survivors)) (VP (VBP breed) (CC and) (VBP pass) (PP (IN on) (NP (NP (DT the) (NN resistance) (NN trait)) (PP (TO to) (NP (PRP$ their) (NN offspring)))))) (. .)))
The survivors breed and pass on the resistance trait to their offspring.
(ROOT (S (NP (JJ Selective) (NN breeding)) (VP (VBZ involves) (S (VP (VBG choosing) (NP (JJ certain) (NNS organisms)) (S (VP (TO to) (VP (VB reproduce) (PP (IN with) (NP (CD one) (DT another))) (SBAR (IN in) (NN order) (S (VP (TO to) (VP (VB pass) (PP (IN on) (NP (JJ specific) (, ,) (JJ desirable) (NNS traits))) (PP (TO to) (NP (PRP$ their) (NN offspring))))))))))))) (. .)))
Selective breeding involves choosing certain organisms to reproduce with one another in order to pass on specific, desirable traits to their offspring.