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Is this a diluter heifer?
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<blockquote data-quote="randiliana" data-source="post: 841991" data-attributes="member: 2308"><p>Thanks, CKS.</p><p></p><p>Cattleman, the problem is, that you have several different genes working to make any animal the color that it is. First and foremost, you have the BASE color, that is BLACK, RED, or WILD. Then you have the diluter genes, or the spotting genes, or brindle genes and so on. The test for HOMO BLACK just tests for the BASE color. So a homo black animal can still carry any number of additional genes. </p><p></p><p>For example, most (if not all) Murray Gray cattle are Homozygous black, but they also carry a diluter gene, which makes them gray. There are several different diluter genes out there, I think they are all dominant to non-diluter. </p><p></p><p>In the case of Holstien cattle, most of them are Homozygous for Black as well, and they are also homozygous for the recessive SPOTTING gene.</p><p></p><p>You can have a GRAY, SPOTTED animal that is HOMO for the black gene, cause the diluter, and spots all work in addition to the BASE color. </p><p></p><p>Check out my blog, <a href="http://easygenes.blogspot.com/" target="_blank">http://easygenes.blogspot.com/</a></p><p>or some of these websites</p><p><a href="http://www.sss-mag.com/fernhill/cowcolor.html#base" target="_blank">http://www.sss-mag.com/fernhill/cowcolor.html#base</a></p><p><a href="http://www.braunviehcenter.com/cattle_genetics_part2.html" target="_blank">http://www.braunviehcenter.com/cattle_g ... part2.html</a></p><p><a href="http://www.depts.ttu.edu/afs/ANSC3402/Handouts/alleles.pdf" target="_blank">http://www.depts.ttu.edu/afs/ANSC3402/H ... lleles.pdf</a></p></blockquote><p></p>
[QUOTE="randiliana, post: 841991, member: 2308"] Thanks, CKS. Cattleman, the problem is, that you have several different genes working to make any animal the color that it is. First and foremost, you have the BASE color, that is BLACK, RED, or WILD. Then you have the diluter genes, or the spotting genes, or brindle genes and so on. The test for HOMO BLACK just tests for the BASE color. So a homo black animal can still carry any number of additional genes. For example, most (if not all) Murray Gray cattle are Homozygous black, but they also carry a diluter gene, which makes them gray. There are several different diluter genes out there, I think they are all dominant to non-diluter. In the case of Holstien cattle, most of them are Homozygous for Black as well, and they are also homozygous for the recessive SPOTTING gene. You can have a GRAY, SPOTTED animal that is HOMO for the black gene, cause the diluter, and spots all work in addition to the BASE color. Check out my blog, [url=http://easygenes.blogspot.com/]http://easygenes.blogspot.com/[/url] or some of these websites [url=http://www.sss-mag.com/fernhill/cowcolor.html#base]http://www.sss-mag.com/fernhill/cowcolor.html#base[/url] [url=http://www.braunviehcenter.com/cattle_genetics_part2.html]http://www.braunviehcenter.com/cattle_g ... part2.html[/url] [url=http://www.depts.ttu.edu/afs/ANSC3402/Handouts/alleles.pdf]http://www.depts.ttu.edu/afs/ANSC3402/H ... lleles.pdf[/url] [/QUOTE]
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