Kenny, I don't know... I just remember that when we bought the 2 bulls, they announced at the sale that the black angus bulls were all black, back in their pedigrees, no red angus had been used in any of the black angus cattle pedigrees they were offering... I will have to see if I can find the papers. Don't even know if it is on any of the black angus papers...
I guess I should have not used "homo" when I made that statement... my mistake...should have been purebred registered black angus....
I do remember that the limi bull I bought several years before did say hetero for black... have gotten 2 calves in probably 7 years from him that were not black... and one was on a black cow... no record of her parentage...
Your proof from your homo black simmental with your longhorn does validate that the color rules do not apply to longhorns... my mostly white longhorn had a calf like yours this year... a little less black spotting... BUT.... he had tan coloring on his legs and ears, I took pictures, and they have since turned black.. The cow had some tan spots when she was younger... and they show for a little bit when she sheds out her winter coat but she goes mostly all white, a little brownish in her ears, and just a little black spotting...
If I were more proficient with all the electronic stuff, I would learn how to post pictures I have on this "smart phone"... which is way smarter than me,,,, But I do not go on the internet with the phone... all my internet stuff is done at home on the laptop at the desk.