( ( In ( addition ( to ( ( the ( 22 pairs ) ) ( of ( ( chromosomes ( -LRB- ( autosomes -RRB- ) ) ) ( in ( ( human somatic ) ( ( -LRB- ( body -RRB- ) ) cells ) ) ) ) ) ) ) ) ) ( , ( females ( ( have ( ( a ( 23rd pair ) ) ( consisting ( of ( two ( X chromosomes ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NP (NN addition)) (PP (TO to) (NP (NP (DT the) (CD 22) (NNS pairs)) (PP (IN of) (NP (NP (NP (NNS chromosomes)) (PRN (-LRB- -LRB-) (NP (NNS autosomes)) (-RRB- -RRB-))) (PP (IN in) (NP (ADJP (JJ human) (JJ somatic)) (PRN (-LRB- -LRB-) (NP (NN body)) (-RRB- -RRB-)) (NNS cells))))))))) (, ,) (NP (NNS females)) (VP (VBP have) (NP (NP (DT a) (JJ 23rd) (NN pair)) (VP (VBG consisting) (PP (IN of) (NP (CD two) (NNP X) (NNS chromosomes)))))) (. .)))
In addition to the 22 pairs of chromosomes (autosomes) in human somatic (body) cells, females have a 23rd pair consisting of two X chromosomes.
(ROOT (S (NP (NNS Autosomes)) (VP (VBZ is) (NP (NP (DT another) (NN term)) (PP (IN for) (NP (NN body) (NNS chromosomes))))) (. .)))