There are 64 different codons possible. ATG codes for the amino acid methionine and some such as TAA don't code for an amino acid, but are called termination codons because they terminate the construction of a protein. What you are asking for is what is known about the genetics of gray or white Silkies.
Chickens have two copies of every gene except for sex-linked genes where females have only one.
These mostly white birds are usually called blue splash. This is a private posting area. A valid username and password combination is required to post messages to this discussion.