Is it true that most ginger tabbies born are boys, unless that mother is a toriseshell?
It's just something my friend said when I was going to get Quicksilvers ginger sibling.
The color genes are carried on the X chromozone. So in order for a male to be red (ginger) the mother has to carry the red color on one of her X chromozones (XX).
So she either has to be red herself (2 red X's) or a tortie/bluecream (1 red X, 1 black/blue X).