( ( ( ( ( Today ( , ( ( five ( distinct karyotypes ) ) ( have ( been described ) ) ) ) ) , ) and ) ( ( as ( many ( distinct clades ) ) ) ( have ( been found ) ) ) ) . )
(ROOT (S (S (NP (NN Today)) (, ,) (NP (CD five) (JJ distinct) (NNS karyotypes)) (VP (VBP have) (VP (VBN been) (VP (VBN described))))) (, ,) (CC and) (S (NP (RB as) (JJ many) (JJ distinct) (NNS clades)) (VP (VBP have) (VP (VBN been) (VP (VBN found))))) (. .)))
Today, five distinct karyotypes have been described, and as many distinct clades have been found.
(ROOT (S (NP (CD Five) (JJ mass) (NNS distinctions)) (VP (VBP have) (ADVP (RB radically)) (VP (VBN altered) (NP (NP (DT the) (NN history)) (PP (IN of) (NP (NN life)))))) (. .)))