( ( Fitness ( in ( evolutionary terms ) ) ) ( ( has ( ( an ( exact meaning ) ) ( related ( to ( ( the number ) ( of ( ( surviving offspring ) ( ( produced ( by ( ( an individual ) ( in comparison ) ) ) ) ( to ( ( less well-endowed ) individuals ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Fitness)) (PP (IN in) (NP (JJ evolutionary) (NNS terms)))) (VP (VBZ has) (NP (NP (DT an) (JJ exact) (NN meaning)) (VP (VBN related) (PP (TO to) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (VBG surviving) (NN offspring)) (VP (VBN produced) (PP (IN by) (NP (NP (DT an) (NN individual)) (PP (IN in) (NP (NN comparison))))) (PP (TO to) (NP (ADJP (RBR less) (JJ well-endowed)) (NNS individuals))))))))))) (. .)))
Fitness in evolutionary terms has an exact meaning related to the number of surviving offspring produced by an individual in comparison to less well-endowed individuals.
(ROOT (S (NP (DT The) (NN term) (NN fitness)) (VP (VBZ describes) (NP (NP (DT the) (JJ overall) (NN ability)) (PP (IN of) (NP (DT an) (NN animal) (S (VP (TO to) (VP (VB survive) (CC and) (VB produce) (NP (NN offspring))))))))) (. .)))