newcattlepr - Cattle Color Genetics Problem Set ANS 3384 1....

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Cattle Color Genetics Problem Set ANS 3384 1. A black bull known to be a red carrier (that is, heterozygous for red) is bred to a wild-type cow, also known to be heterozygous for red. What are the phenotypic ratios expected in the progeny? 2. A black bull known to carry the wild-type gene and also to be heterozygous for the brindle gene is bred to a wild-type cow known to carry the red gene. What are the phenotypic ratios expected in the progeny? (Remember that to be wild type in coloration an animal cannot have a Br gene.) 3. A bull that is the result of a mating of a Hereford bull to a Holstein cow is mated to a cow that comes from the mating of an Angus to a Holstein. What is the array of spotting patterns possible in the progeny? 4. A black and white Holstein bull whose dam was red and white is mated to a cow that came from the mating of a Pinzgauer (a red breed homozygous for S P ) with an Angus (homozygous for both black and non- spotting, E d E d S + S + ). What are the phenotypic ratios expected for both
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This note was uploaded on 07/16/2011 for the course ANS 3384 taught by Professor Olson during the Spring '09 term at University of Florida.

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newcattlepr - Cattle Color Genetics Problem Set ANS 3384 1....

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