( Meiosis ( likely ( ( evolved ( in ( ( doubled cells ) ( that ( already ( divided ( by mitosis ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NNS Meiosis)) (ADVP (RB likely)) (VP (VBD evolved) (PP (IN in) (NP (NP (JJ doubled) (NNS cells)) (SBAR (WHNP (WDT that)) (S (ADVP (RB already)) (VP (VBN divided) (PP (IN by) (NP (NNS mitosis))))))))) (. .)))
Meiosis likely evolved in doubled cells that already divided by mitosis.
(ROOT (S (NP (NNP Daughter) (NNS cells)) (VP (VBP divide) (PP (IN by) (NP (NNS meiosis)))) (. .)))