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genetics Archive
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Only 8 Border Collies
Posted on April 21, 2011 | 8 CommentsOver 250,000 Border Collies have been registered with the ISDS since its founding over a century ago even though they didn’t really keep comprehensive stud books in earnest until […] -
The Unfortunate Case of the Wild Australian Shepherd
Posted on March 23, 2011 | 93 CommentsThe Australian Shepherd is a breed that has been constructed to maximize two different lethal semi-dominant traits: Merle and Bobtail. Without the careful hand of breeders to prevent Merle x […] -
Lethal Semi-Dominant: Bobtail
Posted on March 21, 2011 | 26 CommentsSemi-dominant alleles are those that are less potent in heterozygous form (one copy) than they are in homozygous form (two copies), but which are potent enough to show a difference […] -
Lethal Semi-Dominant: Merle
Posted on March 18, 2011 | 52 CommentsWe learned before that recessives are dangerous because when they are doubled up it often means that a vital bodily process is entirely broken leading to disease. Recessive disease is […] -
Selective Breeding Gone Bad
Posted on March 11, 2011 | 20 CommentsI wonder when, if ever, dog culture will catch up to science and embrace our new understanding of how harmful bogus notions of purity are. The philosophical foundations of the kennel […]