Hmmm not exactly... the definition of species is pretty unclear... it is mostly based on the form and the habits of a given animal... not on genes at all.
There are much more than only slave and master genes... that was just to explain real quick how it works... yet no definition is based on those notions as far as I know
And remember races is determined since the letters. And those letters make genes but are not genes. Just as letters make a word but are different from words since words have the meaning and letters are just letters.
I will be glad to explain you what I know of it if you want to
