Posted by HHK
on 10/16/2009, 9:36 am, in reply to "Re: maybe an old topic.."
68.179.111.201
They are in cats. Colour is carried on the X chromisome so you can have a black or an orange cat with with or without white(not a colour, but void of colour), but you can't have a calico male - XY. A female is XX so they can have any of the the above. So only on the extremely rare fluke that a male is born XXY (it's happened in people, I think they're himaphrodites?)then there are never any calico boys. 
I wonder why this is not true in dogs too?
If you're riding' ahead of the herd, take a look back every now and then to make sure it's still there.
~ Will Rogers95
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