Fritzi's got two X chromosomes -- one black, one orange. And the white-spotting gene. Now, since your coat is not black, it must be orange, which is OO. (Fritzi is Oo) Therefore, the only way you and Fritzi could have a calico kid is if she passed on the X-bl chromosome to you, along with the white-spotting gene.
Otherwise, the kid would be orange. Not sure about the white spots.
no subject
Fritzi's got two X chromosomes -- one black, one orange. And the white-spotting gene. Now, since your coat is not black, it must be orange, which is OO. (Fritzi is Oo) Therefore, the only way you and Fritzi could have a calico kid is if she passed on the X-bl chromosome to you, along with the white-spotting gene.
Otherwise, the kid would be orange. Not sure about the white spots.