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811

811. : Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions.

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811

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  1. 811 : Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions.

  2. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. Key concepts/skills: Level 1: Define key vocabulary. Level 2: Classify an adaptation as structural, behavioral, or physiological. Level 3: Describe the advantages and disadvantages of individual adaptations. Predict whether an organisms adaptations will allow it to survive in a particular environment.

  3. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. • Key vocabulary: • Structural adaptations circadian rhythms hibernation/estivation • Behavioral adaptations innate vs learned migration/migratory • Physiological adaptations territory/territorial sexual/asexual • populations camouflage predator/prey • biological clock internal/external fertilization

  4. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. • Adaptation • Adaptation – any characteristic that improves an organism’s ability to survive and reproduce in a specific environment • Structural adaptations – inherited characteristics of anatomy or physical appearance that improve survival and reproduction in a specific environment • Example; Woodpecker’s beak, chameleon’s tongue, polar bear’s fur

  5. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. Structural adaptations b. Internal fertilization – union of egg and sperm internally c. External fertilization - union of egg and sperm outside d. asexual reproduction - offspring without egg and sperm e. sexual reproduction – egg and sperm produce offspring

  6. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. 2. Behavioral adaptations – inherited or learned behaviors that improve survival and reproduction in a specific environment a. Example; hibernation of mammals, amphibians, and retiles

  7. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. B. Natural selection 1. The process by which organisms which are best suited to a particular environment survive and reproduce.

  8. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. II. Variation • Variation – differences that exist naturally among members of a species • Because members of a population of organisms are different, some are better adapted to their environment than others. Thus they can survive and reproduce better than other members of their species. 2. Large variation within a population is good, this allow some members of the population to survive no matter what changes may occur in their environment.

  9. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. III. Predictions • We want to be able to say which individuals would survive best in which environments • To make these predictions, we must simply decide which individual has adaptations that best fit the environment that is presented.

  10. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. IV. Variation of a population A. Factors that effect population size 1. Food supply 2. Water supply 3. Disease 4. Predation 5. Human activity 6. Extreme weather 7. Geological disasters (earthquake, tsunami, volcano)

  11. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions.

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