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pure line

noun, Genetics.
1.
a uniform strain of organisms that is relatively pure genetically because of continued inbreeding and artificial selection.
Origin
1905-1910
1905-10
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for pure-line

pure line

noun
1.
a breed or strain of animals or plants in which certain characters appear in successive generations as a result of inbreeding or self-fertilization
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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6
8
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