@nomrbddgs:
Add to this that Robyn has been, and started, her breeding line with the whole intention of health. Not just Fanconi, but also eyes, hips, IPSID, etc. Sugar eyes have also been tested-when she tested two months ago she came back with one strand iris to iris. At the vet last week, no strand is visible. While the gentleman testing expected to see PPM, (his comment was 'all Basenji's get PPM'), the vet (he is Egyptian and has seen quite a few of these dogs) was more than pleased with all results back. We also X-rayed hips and he thought they were very good. This is what I mean when I say I expected nothing less from this line. This is just my opinion based on why I chose Robyn as a breeder, she has VERY carefully over the years assessed all options. Not that there are not other breeders who do this-there are plenty. But I also do NOT have any problems working with Robyn. Again this is IMO.
I'm a little confused –Did my question in any way appear to be doubting Robyn's breeding practices? That was -- I thought clearly -- not my intent at all. I have no doubt that Robyn is a fine breeder.
It was just a question about expectations of Fanconi. Testing eyes, hips, etc. has nothing to do with Fanconi, so I don't get how being sure those tests are done would give any expectation that Fanconi wouldn't be in the line.
There are quality breeders who choose dogs carefully and who have done all the necessary testing, who have bred successfully for years with no sign of Fanconi, who have been hit with dogs coming back testing as carriers or affected.
Honestly, it was just a QUESTION regarding WHERE the expectation for FANCONI CLEAR would come from when there had been no prior testing available because even an apparently "clean" family {based on known history, not testing} can produce Fanconi carriers and even affecteds.