Unless its changed, Wyoming will define the gender diff. by the black cheek patch. The tag should be any antelope or doe/fawn. Horn length is not a consideration.

Mnorth is right about the meat. Antelope are not difficult for the rifle hunter. Glass, find, stalk, shoot. Most have no business taking a running shot, though many do. I usually get the meat in the freezer the day of the kill. If you can't butcher right away (don't buy into the idea that you need to age antelope) then skin, quarter and pack in ice in coolers. Let the water drain. If you have to travel for an hour or more before you can do so, than have a couple of bags of ice to pack in the body cavity. It is excellant table fair and I've served antelope steaks to people who swore they hated the meat and thought they were eating deer until I told them otherwise.