( ( ( ( ( Vertebrates ( reproduce sexually ) ) , ) and ) ( ( ( almost all ) ( of them ) ) ( have ( separate ( male ( and ( female sexes ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNS Vertebrates)) (VP (VB reproduce) (ADVP (RB sexually)))) (, ,) (CC and) (S (NP (NP (RB almost) (DT all)) (PP (IN of) (NP (PRP them)))) (VP (VBP have) (NP (JJ separate) (JJ male) (CC and) (JJ female) (NNS sexes)))) (. .)))
Vertebrates reproduce sexually, and almost all of them have separate male and female sexes.
(ROOT (S (NP (NNS Vertebrates)) (VP (VB reproduce) (ADVP (RB sexually))) (. .)))