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5 Written questions

5 Matching questions

  1. Replacement Rate
  2. Heritability
  3. Regression
  4. Truncation Selection
  5. Breeding Value
  1. a Measure of the strength of the relationship between P and BV for a trait in a population.
  2. b Genetic value as a parent. Indication of potential to contribute to offspring.
  3. c Selection based on performance above a certain level.
  4. d Indicator of the expected change in one trait relative to change in another trait in a population.
  5. e Rate at which selected individuals replace existing parents in the population.

5 Multiple choice questions

  1. -influences resemblance among relatives
    -influences accuracy of selection and rate of genetic change
  2. -not fixed, varies across populations and environments
    -used for making culling decisions
  3. Set a minimum performance level for each trait being considered. Cull any animal that does not meet the standard for every trait.
  4. Multiple trait selection reduces selection intensity compared to selection for a single trait.
  5. Calculated using covariance, a measure of how two traits or values vary together in a population.

5 True/False questions

  1. Accuracy of SelectionSelection based on performance above a certain level.

          

  2. Contemporary GroupingCalculated using covariance, a measure of how two traits or values vary together in a population.

          

  3. Selection IntensityStrictness of selection criteria.

          

  4. Rate of Genetic ChangeResponse due to selection

          

  5. Genetic VariationVariability of BV for a trait in the population. The greater the genetic variation, the greater the difference between superior and inferior animals.

          

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