Biology Question- Genetics?
Coat color in Shorthorn cattle demonstrates codominance. Red-coated cattle have the genotype RR. White-coated have the genotype R’R’ and the heterozygote RR’ has both red and white hairs growing together so that the coat appears roan. If a roan bull is mated with a white cow, what will be the phenotypic ratio and what will be the genotypic ratio?
RR’ x R’R’ gives RR’ (50% roan) and R’R’ (50% white).
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1970s Iowa Corn Fed Beef Cattle, Cow, Angus, Simmental, Shorthorn postcard $4.99 |
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ANTIQUE PRINT – SHORTHORN BULL AND COW- HENGEVELD- 1865 $44.91 |
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ANTIQUE PRINT – SHORTHORN BULL AND COW- HENGEVELD- 1865 $44.91 |
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ANTIQUE PRINT – SHORTHORN BULL AND COW- HENGEVELD- 1865 $44.91 |
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Shorthorn Cattle – cow a calf Photo Mugs JD-3788 Shorthorn Cattle – cow a calf John Daniels Please note that prints are for personal display purposes only and may not be reproduced in any way. contact details prints ardea tel and 44 (0) 20 8672 2067…. |
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Breeds of Cattle: 21st Anniversary Commemorative Edition $110.00 This marks the twentieth anniversary of the 1987 publication. The completely revised, updated, and expanded volume includes eleven additional breeds, bringing the total to forty-five, all of which are illustrated in full color formal portraits of a mature bull and mature cow of each breed. The portraits of Durhams pictured on the front and back covers, for example, were taken from Purdy’s personal… |
