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Analyzing Population Variation for Survival Predictions Under Environmental Conditions

This study focuses on analyzing data regarding levels of variation within populations to make survival predictions under specific environmental pressures. Key concepts include genetic variation, natural selection, and the effects of environmental pressures such as competition, predation, and disease on population dynamics. The role of adaptations that enhance survival is examined, along with the impacts of genetic bottlenecks. Understanding these factors is essential for predicting how populations respond to changing ecological conditions.

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Analyzing Population Variation for Survival Predictions Under Environmental Conditions

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  1. 812 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: Identify the four parts of natural selection. Explain why genetic variation is important. Level 3: Given data that shows population variation, explain the environmental pressures or adaptations that are affecting population growth.

  3. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. Key vocabulary: Population (review) environmental pressures competition Natural selection limits on populations predation Genetic variation genetic bottleneck starvation Population variation adaptation (review)

  4. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. Populations A. Individuals of the same species living in the same area 1. Population Variation – natural increases and decreases in the number of individuals in a population 2. Genetic Variation – variation in the traits of a population (all humans look different) 3. Adaptations – any trait that increased the survival and reproduction of a species

  5. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. II. Limits on Population A. The following limit populations 1. Environmental Pressures a. Food, water, seasons, weather 2. Predation – predators and prey limit one another’s pop. 3. Competition – organisms compete for food, mates, and space 4. Disease – communicable diseases limit a population

  6. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. III. Natural Selection A. 4 Stages of Nat Sel. 1. Overpopulation – More offspring are born than will live to become adults

  7. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. 2. Genetic Variation – individuals have different traits in a population

  8. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. 3. Struggle to survive – environmental pressures, competition, and predation take their toll on the population

  9. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. 4. Successful Reproduction – only the individual that survives the pressures on the population reproduce

  10. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. B. Genetic Bottlenecking – large variety in a population suddenly disappears becase of many pressures on the pop.

  11. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. *Environmental Pressures *Competition and *Predation Population with Genetic Variation Natural Selection

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