Animal Management > EXAM > ANSC 4395 Exam 1 | with COMPLETE SOLUTION | 94 Questions with 100% Correct Answers (All)

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ANSC 4395 Exam 1 | with COMPLETE SOLUTION | 94 Questions with 100% Correct Answers

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What is Animal Breeding Correct Answer: Scientific field that uses the principles of genetics to aid in the improvement of livestock. What are the 3 classes of cattle? Correct Answer: British American Exotics- usually European Who is Robert Bakewell? Correct Answer: "Father of Animal Breeding" - Leased out Bulls What did Robert Bakewell not hesitate to mate? Correct Answer: "best to the best" with little regard to ancestry. Not afraid to inbreed. What was one of the first organized breeds of livestock in 1580? Correct Answer: Shorthorns Who is Gregor Mendel? Correct Answer: He established basic genetic principles that are still accepted today. What did Gregor Mendel study? Correct Answer: The genetics of the garden pea. Population Genetics Correct Answer: Branch of genetics which deals with the factors that affect the genetic structure of populations. *what % of alleles and genotypes* What two guys were involved with population genetics? Correct Answer: 1. Dr. Sewell Wright 2. Sir Ronald Fisher Dr. Wright did research with who? Correct Answer: USDA and then later at the University of Chicago Worked at the Rothamstead Experiment Station in Great Britain. Correct Answer: Dr. Fisher Dr. Jay Lush Correct Answer: "Father of MODERN animal breeding" *established a formal theoretical framework to the science of animal breeding* Dr. Jay Lush established what principles? Correct Answer: The principles of selection, the use of inbreeding to conserve genes of some individuals, and crossbreeding systems to take advantage of HYBRID VIGOR. During the last 30 or 40 years, the use of what has greatly enhanced the potential for genetic change? Correct Answer: Computers/ technology Artificial Insemination and embryo transfer have allowed for what? Correct Answer: Faster progeny testing and selection has become much more efficient. What is the primary goal of animal breeders? Correct Answer: Identify animals with desirable genes and increase the frequency of those genes. *they want a bunch, they're the ones they select to be parents to pass on the good genes* What is the best animal? Correct Answer: -Lab- Show winner or best retriever -Cattle- cutability/% muscle (limousin) or quality grade (angus) -Dairy Cattle- most milk or best udder, feet and legs. **all depends on what they want as "best"**

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