Fun With Genetic: Magical and Squib
My friend and I had way too much time on vacation and thought of a possibility for the occurrence of "muggle" born witches and wizards. Since we both believe that Lilly Potter is descendent from Salazar Slytherin, I also made the comment that perhaps there was a long line of squibs, prior to the conception of Lilly. For our purposes, we made the assumption that Merlin and the Hogwarts founders were "alive" in the late fourteenth century (since we could not quite remember when King Arthur was king). Also, we believe that Slytherin had two sons, names unknown. The older one had green eyes, and had a line of children that resulted in a long line of squibs due to a little bit of muggle, or pure squib, mixings. The younger, without green eyes, was the originator of the Gaunt line of Slytherin heirs. Since it is known that Voldemort, or Tom Riddle, is a half blood from the Gaunt line of Slytherin heirs, we believe that both Tom and Lilly are great-great-great-great-great-great-great-great-great-great-great-great-great-grandchildren…(there are 13 greats by the way)…of Salazar Slytherin.
So on with genetics of this all. For our purposes we will use M for magical and m for squib. (We are sticking to the rule that the dominant symbol is the uppercase and the recessive is lowercase. Meaning that magical is dominant. It is also sex linked, the trait is carried on the X chromosome, however it is also carried on the Y, but the Y dominant trait can not stand alone. There is also a part of the X chromosome trait which makes it so that if not backed up by another dominant, every other generation, the gene will be turned off the duration of that persons life.) In the case of "muggle" born witched and wizards, for the males they get either a on X not backed up by a Y, an on X backed up by a Y, or an off X backed up by a Y. For females they can have one, or two on X's, one on X and one off X, or two off X's. In the case of Hermione and Lilly their parents either both had off X traits or one had an off X trait. In the case of Denis and Colin Creevy, since we do not know there mothers background, if she happened to be a witch and their father a carrier, they would be wizards, or if there mother had one turned off X trait which they both happened to receive.
Please review with any questions. I'll answer them as soon as I can.
