Applied Animal Genetics MCQ's Q^0As.docx

What is one negative consequence of using the Holstein breed for increased milk yield in the Irish herd? A. Enhanced fertility across the herd B. Improved adaptability to environmental changes C. Increase in overall herd size D. Concentration of undesirable traits ANSWER: D What is the main be...

What is one negative consequence of using the Holstein breed for increased milk yield in the Irish herd? A. Enhanced fertility across the herd B. Improved adaptability to environmental changes C. Increase in overall herd size D. Concentration of undesirable traits ANSWER: D What is the main benefit of progeny testing compared to performance testing? A. It directly enhances environmental adaptability B. It provides genetic lineage information C. It leads to improved feed efficiency D. It assesses physical attributes accurately ANSWER: B Which process is defined as \'Survival of the fittest\' in the context of natural selection? A. Inbreeding to enhance desirable traits B. Cloning of genetically identical organisms C. Organisms better adapted to their environment survive D. Genetic modification of animal traits ANSWER: C What is one approved method of genetic modification in livestock? A. Insertion of genes into the genome B. Selective breeding C. Cloning D. Cross-breeding with wild species ANSWER: A What is the primary purpose of understanding genetics in animal farming? A. To reduce the amount of feed required for animals B. To ensure all animals are identical in traits C. To enhance the genetic merit and profitability of the farm D. To increase the number of animals on the farm ANSWER: C What was the significance of Dolly the sheep in 1996? A. First hybrid livestock breed B. First genetically modified crop C. First animal cloned from an adult cell D. First cloned plant species ANSWER: C Which method is NOT typically associated with producing genetically identical plants in horticulture? A. Natural pollination B. Micropropagation C. Cuttings D. Grafting ANSWER: A Which physical trait is associated with Aberdeen Angus cattle? A. Natural polled condition B. Body size variation C. Long tail D. Presence of horns ANSWER: A In the context of performance testing, what is being specifically evaluated? A. The bull\'s mating success rate B. The bull\'s compatibility with different environments C. The bull\'s general health status D. The bull\'s weight gain and feed conversion ratio ANSWER: D What is the significance of the gene for the polled condition in cattle? A. It is dominant and ensures the absence of horns in offspring. B. It has no impact on the physical traits of cattle. C. It is recessive and commonly leads to the development of horns. D. It is responsible for the overall size of the animal. ANSWER: A What does progeny testing evaluate? A. The physical characteristics of the bull itself B. The quality of the feed used for offspring C. The performance of a bull\'s offspring compared to others D. The genetic diversity of a farm\'s animal population ANSWER: C Why is DNA important in animal genetics? A. It simplifies the breeding process without selection. B. It helps identify animals with high genetic merit. C. It forecasts market prices for livestock. D. It determines the exact age of an animal. ANSWER: B What aspect of genetics does line breeding focus on? A. Maximizing genetic diversity among breeds B. Eliminating all undesirable traits from the gene pool C. Ensuring uniformity in all performance metrics D. Inbreeding to concentrate desirable traits ANSWER: D Which of the following best describes selective breeding? A. A process that aims to propagate specific desirable traits B. A technique that emphasizes environmental factors over genetics C. A method focused on random mating of animals D. An approach that disregards genetic traits in favor of physical appearance ANSWER: A