( ( ( ( ( ( These polyploids ) ( ( can then ) ( ( reproduce sexually ) ( with ( one another ) ) ) ) ) , ) and ) ( ( their offspring ) ( will ( ( have ( ( the ( same ( , ( even number ) ) ) ) ( of chromosomes ) ) ) ( that ( they ( do ( so ( they ( will ( be ( ( fertile ( as ( well as ) ) ) healthy ) ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (DT These) (NNS polyploids)) (VP (MD can) (RB then) (VP (VB reproduce) (ADVP (RB sexually)) (PP (IN with) (NP (CD one) (DT another)))))) (, ,) (CC and) (S (NP (PRP$ their) (NN offspring)) (VP (MD will) (VP (VB have) (NP (NP (DT the) (JJ same) (, ,) (JJ even) (NN number)) (PP (IN of) (NP (NNS chromosomes)))) (SBAR (IN that) (S (NP (PRP they)) (VP (VBP do) (SBAR (IN so) (S (NP (PRP they)) (VP (MD will) (VP (VB be) (NP (ADJP (JJ fertile) (CONJP (RB as) (RB well) (IN as)) (JJ healthy))))))))))))) (. .)))
These polyploids can then reproduce sexually with one another, and their offspring will have the same, even number of chromosomes that they do so they will be fertile as well as healthy.
(ROOT (S (NP (JJS Most) (NN fish)) (VP (VB reproduce) (PP (IN with) (NP (CD one) (DT another))) (ADVP (RB sexually))) (. .)))