Pea Pods of Punnett-link

How cute are these little yellow and green pea pods?
In light of the fact that in Sept of 2008 the DNA test for the Degenerative Myelopathy gene has become available to the Ridgeback Dog Breeders, it is now important that we learn how to interperate the results.
 Here is a punnett square you can use. The NN ( The NN is the symbol that is on your OFA report and used in Ridgeback terms) or Normal for DM (not having) can be used at the top and side where the small green y's are located.. The yellow Y has the disease.  As you will see  the resulting prodegy 2 will be NN or Normal and 2 will be carriers. Try combining different combinations.
If you are a breeder and own a Ridgeback that is a carrier, then that dog must be bred to a dog that is tested and has an OFA # that is NN. This is how we eliminate the disease from our breed.