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pure line

n :  a homogeneous line of descent: as  a  :  a group of closely related individuals of identical genetic constitution (as the offspring of a homozygous self-fertilized parent)  :  a line of descent theoretically realizable from the inbreeding of completely homozygous and comparable parents  b  :  the descendants of a single individual esp. by vegetative multiplication  :  CLONE .
Similar sounding terms:  pro·lan  pro·line 

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