These genetics links were brought together with the Toller breeder in mind.
 

Practical Genetics for Dog Breeders
http://mywebpages.comcast.net/NoPuppyMillsVA/Poo-dogs___Designer_Mutts/Practical_Genetics/practical_genetics.html

Control of genetic disease (Padgett)
http://www.workingdogs.com/doc0031.htm

Direct link to really good padgett article
http://www.beaconforhealth.org/Genetics-Padgett.htm
 
 

Breaking the genetic code (dog owners guide)
http://www.canismajor.com/dog/gencode.html

Select against genetic disease - not hope
http://www.nwk9.com/high_anxiety.htm
 
 

Genetics and Breeding
http://www.siriusdog.com/bell.htm
 
Bearded collie club site
http://www.beaconforhealth.org/Genetics.htm

Various Genetic Articles

http://www.dogstuff.info/genetic_index.html