( ( ( monosomic ( A ( diploid cell ) ) ) ( missing ( a ( single chromosome ) ) ) ) . )
(ROOT (NP (NP (JJ monosomic) (DT A) (JJ diploid) (NN cell)) (VP (VBG missing) (NP (DT a) (JJ single) (NN chromosome))) (. .)))
monosomic A diploid cell missing a single chromosome .
(ROOT (S (NP (DT A) (JJ diploid) (NN cell)) (VP (VBZ is) (NP (NP (DT a) (NN cell)) (PP (IN with) (NP (CD two) (NNS chromosomes))))) (. .)))