Newbie Question: If you cross Ewe breed 1 with Tup breed 2, will that produce the same result as Ewe breed 2 and Tup breed 1?
O-level biology answer : I guess it depends what is on, or affected by what's on, the Y chromosome.
In terms of the lamb, I can't think of any obvious things off the top of my head, but in terms of the
lambing, one would think about the size of the tup's shoulders and rump, and possibly head if horned or expecting singles, and about the motherliness and milkiness of the ewe.
If there are any differences, I bet they are mainly about colour.
With Blue-Grey cattle, the normal cross is Whitebred Shorthorn bull on Galloway cow, but we have some which are t'other way about. As far as I can tell they seem to be just the same.