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for the experts: Angus-Hereford
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<blockquote data-quote="Anonymous" data-source="post: 4500"><p>Dun you are usually right on but a small slip here. There is no way an animal can be homozygous red just as it can't be homozygous horned. Black or polled are dominant therefore can be homoygous. I am a Simmental and Red Angus breeder so I totally agree with your comment on the diluter gene. The spotter gene also makes life interesting. You are right on about the scurred gene being sex related as we get a lot more scurred bulls and very few on our females. We bred some reg. Red Angus cows to an ABS Black Simmental bull and had every bull calf come with scurrs and none on the females.</p><p></p><p>> For an animal to be red it must be</p><p>> homozygous red, black can be</p><p>> either heterozygous or homozygous</p><p>> black. The fun comes in when you</p><p>> start throwing in diluter genes</p><p>> from various breeds. Diluter and</p><p>> modifier genes can alter the</p><p>> expected color results. The same</p><p>> deal works with the african horn</p><p>> gene, throw that into the horn mix</p><p>> and you get unpredictable results</p><p>> because it isn't fully understood</p><p>> yet how the modifiers/diluters</p><p>> work in every case. In some of the</p><p>> less studied breeds they don't</p><p>> even know all of the</p><p>> diluter/modifier genes. It's</p><p>> possible that a diluter/modifier</p><p>> may be either dominant or</p><p>> recessive based on gender. If I</p><p>> remember correctly the scur gene</p><p>> is dominant in bulls but recessive</p><p>> in females.</p><p></p><p>> dun</p></blockquote><p></p>
[QUOTE="Anonymous, post: 4500"] Dun you are usually right on but a small slip here. There is no way an animal can be homozygous red just as it can't be homozygous horned. Black or polled are dominant therefore can be homoygous. I am a Simmental and Red Angus breeder so I totally agree with your comment on the diluter gene. The spotter gene also makes life interesting. You are right on about the scurred gene being sex related as we get a lot more scurred bulls and very few on our females. We bred some reg. Red Angus cows to an ABS Black Simmental bull and had every bull calf come with scurrs and none on the females. > For an animal to be red it must be > homozygous red, black can be > either heterozygous or homozygous > black. The fun comes in when you > start throwing in diluter genes > from various breeds. Diluter and > modifier genes can alter the > expected color results. The same > deal works with the african horn > gene, throw that into the horn mix > and you get unpredictable results > because it isn't fully understood > yet how the modifiers/diluters > work in every case. In some of the > less studied breeds they don't > even know all of the > diluter/modifier genes. It's > possible that a diluter/modifier > may be either dominant or > recessive based on gender. If I > remember correctly the scur gene > is dominant in bulls but recessive > in females. > dun [/QUOTE]
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