Practice problem
Codominance — Overview & Examples

Image Source: Two Adorable Kittens by Alex Grichenko CC0, via publicdomainpictures.net
You want a litter of tabby kittens to live on your farm and eat mice. You know that tabby fur is made from a combination of black (B) and tan (T) fur. You also know it is a codominantly expressed allele. How do you guarantee that all of your kittens have a tabby fur pattern?