the two genes are

oh and for those who wants to know, the gene that they changed/inserted to the monkey was a pair of opsin gene. one codes for green in the retina while the other one red. thus if one is missing then they are not able to figure out a certain color thus they become color blind. the can cause major problems in our society since we our stop light are in red and green, if some one can't recognize them than they can't drive.