Subject	chromosome
Predicate	need
Object	to duplicate
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9566
Neighborhood Sigma	0.9659
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source chromosomes need to duplicate 1 Google Autocomplete chromosomes need to duplicate before a cell divides 1 Answers.com Questions