Breeding and Genetics Exam 2 Practice

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• What factor can cause heritability estimates to differ among breeding programs?
• What is the usual percent protein content in dairy cattle?
• What is NOT typically associated with the concept of fitness in horses?
• What is the ideal selection strategy for large animal breeding operations?
• What is a multi-trait index that assesses aggregate breeding value in economic terms?
• What is one effect of high progeny equivalency in a breeding program?
• Which measurement is most concerned with the true breeding value under selection?
• At what level is the rate of increasing a gene frequency greatest in a closed herd?
• Which of the following statements is true regarding progeny equivalency?
• What is the wither height measurement level in horses?
• Which term identifies the average expected breeding value that parents will pass to their offspring?
• Which type of genetic trait is influenced by multiple genes?
• Are heritability and repeatability considered fixed within a population?
• Among the traits listed, which one is a moderate heritability trait?
• What characteristic of tenderness is typically associated with beef cattle?
• What is referred to as a level of breeding value considered optimal?
• What term describes the interaction between genes at the same loci?
• What does h2 indicate in a breeding context?
• What is the selection strategy called when a trait is chosen to improve the same trait?
• In which context is repeatability most often measured?
• What is the main focus of breeding programs that utilize quantitative traits?
• What is the level of heritability for loin eye area in sheep?
• Which term is used to describe the ability of an individual to contribute to the gene pool of the next generation?
• Which trait in sheep is characterized by moderate heritability according to the provided information?
• Which of the following traits has high heritability in sheep?
• What is the expected heritability for staple length in sheep?
• What is an EPD and the associated accuracy for an animal with progeny data referred to as?
• Marbling in beef cattle is known to have what level of heritability?
• What is classified as a moderate run time for horses over one mile?
• What is the heritability of calving interval in beef cattle?
• Which of the following factors is typically rated as moderate in dairy cattle?
• In sheep breeding, what is the heritability of backfat thickness?
• What is the heritability of mature weight in sheep?
• In genetics, what is the primary focus of heritability in the narrow sense?
• What term is often used to express the ability of an animal to transmit desired traits to its offspring?
• Which of the following traits has low heritability in beef cattle?
• What is the effect of a combination of genes, such as dominance and epistasis?
• What type of trait may not be relevant on its own but is used to improve a genetically correlated trait?
• What is the primary benefit of knowing progeny equivalency in breeding programs?
• Which term is defined as the value of an individual's genes to its progeny's performance?
• What does H2 represent in genetics?
• In breeding and genetics, what does the term 'accuracy' primarily refer to?
• What method measures the performance of individuals by comparing their genetic potential based on observed traits?
• When making mating decisions in a breeding program, what aspect do you focus on?
• What level of heritability is associated with feed efficiency in sheep?
• Which term refers to traits for which animals have more than one performance record?
• What role does progeny equivalency play in evaluating breeding success?
• Heritability is constrained within which range?
• Which concept is defined as the difference between the mean selection criterion of selected individuals and that of the entire population?
• Which trait in sheep is characterized by moderate heritability?
• How is scrotal circumference in beef cattle classified in terms of heritability?
• What is the heritability of backfat thickness in beef cattle?
• What does the term "backfat thickness" in swine generally indicate?
• What term is used for any piece of information utilized for making selection decisions?
• What unit is generation interval expressed in?
• What is the typical days to reach 250 lbs characteristic in swine?
• What are the three requirements for a contemporary group?
• Which of the following provides the value of an individual's genes to its performance?
• Which term describes the effect of a single gene influencing multiple traits?
• Which trait is often linked with a high heritability factor in beef cattle?
• What term describes a moderate level of heritability in beef cattle traits?
• What is the typical level of milk yield found in dairy cattle?
• In genetics, what do we call traits that can be attributed to a single gene?
• What selection method involves focusing on one trait before moving to the next?
• What does ETA stand for in the context of genetics?
• What is the heritability of birthweight in sheep?
• Which term best characterizes the observable association between two traits as influenced by the environment?
• In breeding and genetics, progeny equivalency is crucial for which of the following?
• Which term refers to the part of an individual's genotypic value that cannot be transmitted to offspring?
• Which of the following is a measure of genetic progress over generations?
• Which factor is NOT directly affected by progeny equivalency in genetics?
• Which trait does not have a high heritability in sheep?
• How is the conformation of dairy cattle generally rated?
• Which effect is temporary and influences a single performance record?
• What is the term for a mating specifically designed to reveal a parent's genotype at specific loci?
• What is the trot time for horses over one mile typically classified as?
• Which of the following aspects does an EPD NOT focus on?
• Which of the following mainly determines the performance of a trait in a specific environment?
• What is the primary goal of selection in a breeding program?
• What is the average performance expectation for all individuals in a population known as?
• Which trait is considered to have high heritability in beef cattle?
• What term describes the minimum standards set for multiple traits in breeding?
• What do we call the genetic changes in one or more traits resulting from selection for another trait?
• What term refers to the environmental impact on a single record for a repeated trait without affecting others?
• What is the term for an updated Estimated Progeny Difference calculated between BLUP analyses?
• Which concept explains the influence of one trait’s improvement on another trait?
• If you are trying to improve a trait through selection, what are you primarily focused on?
• Which of the following would likely reduce the need for a higher progeny equivalency?
• What is the term for the change in average breeding value of a population over time?
• Heritability in the narrow sense is represented by which symbol?
• What term describes the amount of variation in breeding values within a population for a given trait under selection?
• What is the 'accuracy of selection' in animal breeding?
• In a closed herd, how quickly does the frequency of a low gene increase initially?
• In dairy cattle, how is the level of percent fat commonly described?
• What is defined as the combination of alleles present in an organism?
• In which unit is the selection differential expressed?
• How does repeatability differ from heritability during calculations?
• Which of the following traits would be rated as high in beef cattle?
• What is a possible consequence of low progeny equivalency in a selective breeding program?
• Which term captures the interaction between genes at the same locus that enhances expression?
• What is the typical mature weight classification for beef cattle?
• What is the typical birth weight characteristic in dairy cattle?
• What is the ideal selection strategy for smaller animal breeding operations?
• Can a parent pass on their gene combination value to their offspring?
• What level of heritability is associated with cutting ability in horses?
• What describes the effects of genes at different loci?
• Feed efficiency in beef cattle has what level of heritability?
• What is the loin eye area characteristic in swine?
• Which characteristic is associated with the efficiency of feed conversion in swine?
• Which trait is reported to have high heritability regarding loin eye area in sheep?
• What is the typical quality of teat placement in dairy cattle?
• Which type of correlation describes the influence of environmental factors on two different traits?
• What is the defined value of an individual's genes to its overall performance?
• What is the abbreviation for predicted differences in breeding values?
• Which concept is essential in determining how many offspring a sire requires for accurate genetic evaluation?
• What describes the genetic basis of the relationship between two traits influenced by their respective genotype?
• Why is it important to know heritability in breeding programs?
• What is the characteristic of feed efficiency in swine?
• Which type of selection is primarily aimed at enhancing the same trait’s performance?
• What term refers to the correlation in performance of two different traits?
• What is the primary purpose of an EPD in breeding?
• Which test is designed to evaluate the performance of young males from different herds for growth traits?
• What is the term that describes the correlation in breeding values of two different traits?
• What is the expected difference between the mean performance of an individual's progeny and the mean performance of all progenies called?
• What do we call an EPD that does not typically include an accuracy value and pertains to an animal without progeny?
• What formula is used to calculate selection intensity?
• In a high-density marker panel test, what does the number represent?
• What is the heritability for weaning weight in beef cattle?
• On average, what rating would you expect for calving interval in dairy cattle?
• Which traits will exhibit the narrowest margin in breeding value within a population?
• Why is it important to balance progeny equivalency with genetic diversity in breeding?
• What does the selection intensity measure describe?
• What is the expected outcome when selecting for traits based on correlated responses?
• In genetic evaluation, which aspect is often considered for its impact on selection response?
• What term is used interchangeably with expected progeny differences in animal breeding?
• What is the primary characteristic of quantitative traits?
• What is the heritability level of grease fleece weight in sheep?
• Repeatability measures which aspect of phenotypic data?
• Which method is associated with assessing the genetics of a sire and its progeny?
• What type of traits does a Punnett square primarily project?
• In terms of mastitis resistance, how do dairy cattle generally perform?
• What is the typical temperament level found in horses?
• How is conformation classically measured in horses?
• What is the expected heritability of 60-day weaning weight in sheep?
• How is conformation characterized in swine?
• What is the backfat thickness characteristic in swine?
• What is the term for selection that targets more than one trait at a time?
• How would you classify the heritability of conformation in beef cattle?
• Yearling weight in beef cattle is classified as what level of heritability?
• What feature characterizes a repeated trait in animal breeding?
• Is it more effective to conduct a test mating for traits exhibiting complete dominance or incomplete dominance?
• What is the 21-day litter weight characteristic in swine?
• In the new phenotype equation, what replaces G?
• How is the fat percentage in dairy cattle generally categorized?
• What is the typical number born characteristic in sheep?
• In a breeding program, which sense of heritability is primarily of interest?
• In what unit is genetic variation measured?
• What is the heritability for ribeye area in beef cattle?
• What is the typical pulling power level seen in horses?
• What is the heritability if the correlation for a breeding value trait is 0.7?
• What are the two factors that constitute a highly fit animal?
• What is the new equation for phenotype in genetics?
• What is meant by independent gene effects in animal breeding?
• What is the number born alive characteristic in swine?
• What is the heritability of birth weight in beef cattle?
• What does the term "genetic potential" most accurately refer to?
• Which value specifically cannot be inherited by offspring due to gene combination effects?
• In terms of conformation, what could be expected in sheep?
• How is the cannon bone circumference typically characterized in horses?
• What term describes the number of progeny a sire must have to match the accuracy of DNA testing?
• What is the usual level of udder support observed in dairy cattle?
• What key trait do dairy cattle exhibit in terms of udder support?
• Which term refers to the amount of time required to replace one generation with the next?
• Heritability levels are generally characterized as being what among animals within the same population?
• Can a qualitative trait be expressed on a quantitative scale?
• Do epistatic relationships occur between qualitative and quantitative traits?
• Rank the following from greatest to least: Phenotype, Genetic, Environmental correlations.
• Which characteristic is most commonly associated with the calving interval in dairy cattle?
• Which selection method improves a trait by focusing on a correlated trait?
• What does selection intensity measure in breeding practices?
• What term describes the breeding value for a combination of traits?
• In horse breeding, what term describes varying genetic types among offspring to enhance fitness?
• Which variable is typically excluded from the model when calculating for a non-repeated trait?
• What characteristic typically influences the growth rate in swine?
• What might be a limitation of relying solely on DNA testing for genetic evaluations without considering progeny equivalency?
• Which type of EPD is based solely on pedigree data?
• Which characteristic is assessed along with temperament in horses?
• What does ERT stand for in genetics?
• How does progeny equivalency impact sire selection in breeding programs?
• What effect results from a gene's interaction with the environment, remaining consistent across repeated traits?
• Which type of traits does the environment primarily influence?
• Which of the following traits is considered technically polygenic but qualitatively expressed?
• What does a high heritability value indicate about a trait?
• How is conformation characterized in sheep?
• What does the term 'Fitness' refer to in the context of offspring?
• Which factor is NOT a direct measure of fitness in animals?
• What is the heritability of fleece grade in sheep?