Color Blindness is an x-linked trait. This means that the defective gene leading to color blindness is located on the x-chromosome. The reason that females are unlikely to be color blind is because they have two x-chromosomes (females chromosomes: XX/ male chromosomes XY). If they have a defective x, then they have an extra one that is know as a "back up." You must remember, that color blindness IS NOT CONTAGIOUS!!!
As I have said, it is an x-linked trait. If your father has it , or is a carrier, then the offspring is able to have color blindness. There are also some cases where you can inherit color blindness from an earlier family member (only if they have it, or if they are carriers).
Color Blindness- Topic Overview. 31 Oct. 2007. 26 Feb. 2009
Color Blindness. 1 Jan. 26 Feb. 2009
Color Blindness. 1 June 2007. 26 Feb. 2009
Health, Diana H. About Color Blindness (Color Vision Deficiancy). 1 Jan. 26 Feb. 2009