5 Written questions
5 Matching questions
- Replacement Rate
- Truncation Selection
- Breeding Value
- a Measure of the strength of the relationship between P and BV for a trait in a population.
- b Genetic value as a parent. Indication of potential to contribute to offspring.
- c Selection based on performance above a certain level.
- d Indicator of the expected change in one trait relative to change in another trait in a population.
- e Rate at which selected individuals replace existing parents in the population.
5 Multiple choice questions
- -influences resemblance among relatives
-influences accuracy of selection and rate of genetic change
- -not fixed, varies across populations and environments
-used for making culling decisions
- Set a minimum performance level for each trait being considered. Cull any animal that does not meet the standard for every trait.
- Multiple trait selection reduces selection intensity compared to selection for a single trait.
- Calculated using covariance, a measure of how two traits or values vary together in a population.
5 True/False questions
Accuracy of Selection → Selection based on performance above a certain level.
Contemporary Grouping → Calculated using covariance, a measure of how two traits or values vary together in a population.
Selection Intensity → Strictness of selection criteria.
Rate of Genetic Change → Response due to selection
Genetic Variation → Variability of BV for a trait in the population. The greater the genetic variation, the greater the difference between superior and inferior animals.