Without these two great scientists of the hobby mentioned above, I would still be able to study and write about basic pigeon genetics, but I highly doubt I could learn it this fast with accuracy and with this kind of sophistication.
The fact is, no one really knows all the genetic parts needed to make a human being. Not only do we not know what all the genes are and where they are located, we don't even know how many there are.
Therefore, like the rest of genetics, pigeon genetics still has a lot of unknown elements.
In the ancient Arabic culture, it was believed that if you crossed a camel with a sparrow, you would get an ostrich, or you would get a wild boar if you crossed a goat with a dog.
We can get pouter pigeons when we cross a rooster with a bull frog. Of course, you see in the picture below a prime example of what happens when you breed a pony with a Birmingham Roller.
When you get comfortable with the basic terms, then the subject of pigeon genetics should not seem so difficult. These rules are for the safety of the readers to avoid the severe damages to themselves as well as the safety of their domestic pigeon breeds.