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Portsmouth
Portugal
Portuguese
Portuguese man-of-war
Portuguese water dog
portulaca
POS
posable
posada
pose (1)
pose (2)
poseable
Poseidon
poser (1)
poser (2)
poseur
posey
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position effect
po·si·tion ef·fect


noun 
Definition:
 
genetic expression variable: a change in a gene's expression depending on its location on the chromosome in relation to other genes
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