so the whole bay/brown thing...

I think the theory is that bay is dominant to brown, so if your mare is homozygous for bay then the foal will probably be bay. However, if her two A's are different (one for bay and one for brown) you could get a brown foal.

how do I know if her AA could be diff? she was only tested for red/agouti at UCDavis

There is supposed to be a test out, but I can't say too much about it. Other people are here know a lot more about it.

This lab does the At/brown test

http://www.petdnaservicesaz.com/Agouti…" onclick="window.open(this.href);return false;

if she was tested at U C Davis, both her AA would mean agouti bay right? or would they be 'either' bay or brown?

[quote="dakotakdq"]if she was tested at U C Davis, both her AA would mean agouti bay right? or would they be 'either' bay or brown?[/quote]
Either or possibly wild bay.

UC Davis only tests for "a". So if its not "a" it automatically defaults in the test to "A".

Either of those 'A's could be bay, brown or even wild bay.

ok I think I may test her again at the Pet Services :-)

I tested mine for the heck of it (and to know what she might throw if ever bred to an E_). She's AA with no brown. Of course that has no bearing on your mare, just sharing.

Will be a stunning foal regardless :-D
By the way Cass, checked out your website today, looking good ;-)