1 / 15

Unit IV – Evolution, Change, and Diversity (15% of Public Exam)

Explore the concepts of evolution, natural selection, and artificial selection in this informative guide. Discover early ideas about evolution, evidence that supports the theory, and the mechanisms behind species adaptations and speciation.

ajoann
Download Presentation

Unit IV – Evolution, Change, and Diversity (15% of Public Exam)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Unit IV – Evolution, Change, and Diversity(15% of Public Exam) Ch. 19 – Introducing Evolution (pp. 643 – 671) → what evolution is → natural and artificial selection → early ideas about evolution → evidence used to support evolution Ch. 20 – Mechanisms of Evolution (pp. 672-699) ( 1 Lab) → population genetics → various mechanisms of evolution → Hardy-Weinberg Principle Ch. 21 – Adaptation and Speciation (pp. 700-737) ( 1 STSE) → types of adaptations → theories on origin of life on Earth → how species form

  2. 19.1 Diversity of Life p. 643 → what is evolution? → natural selection → artificial selection

  3. What do you think Evolution is?

  4. Evolution the relative change in the characteristics of populations that occur over successive generations Read about it in you book (Section 19.1)

  5. Evolution the relative change in the characteristics of populations that occur over successive generations Read about it in you book (Section 19.1)

  6. Evolution the relative change in the characteristics of populations that occur over successive generations

  7. Evolution change in the characteristics of populations that occur over successive generations

  8. Adaptations in Evolution a particular: Structure (leaf, Leg Beak) Physiology (digestion, metabolic rate) behavior(nocturnal, arboreal) that helps an organism survive and reproduce in a particular environment.

  9. What types of adaptations are these?

  10. Remember Adaptations in Evolution a particular Structure (leaf, Leg, Beak) or Physiology (digestion, metabolic rate) or behavior(nocturnal, arboreal) that helps an organism survive and reproduce in a particular environment.

  11. Variation in a Population the form of a trait or significant deviation from the normal biological form, function, or structure. Another word for Variation might be range What is the variation or range in height among humans? What is the variation or range in running speed? What is the variation or range in intelligence? All populations have variation (it easier to see in humans)

  12. Natural Selection Natural selection – process whereby the characteristics of a population of organisms change because individuals with certain inherited traits survive specific local environmental conditions. (Survival of the fittest) Individuals survive but populations change!! It is important to note that natural selection does not cause changes in individual organisms, rather entire populations of organisms over time.

  13. Natural Selection & Peppered Mothsp. 644-645

  14. Selective pressure environmental condition or conditions that select for certain characteristics of individuals and select against others. What was the selective pressure for the peppered Moth?

  15. Artificial Selection human selection of a particular trait Ex. Faster horses, disease-resistant plants, breeding of dogs

More Related