1 / 12

How to set up your notebook

Discover how homologous and vestigial structures, along with embryology, provide evidence supporting evolution by natural selection. Explore examples and engage in interactive learning activities to deepen your understanding.

williamstina
Download Presentation

How to set up your notebook

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. How to set up your notebook Right Side Left side • Notes – you will be writing the notes today • For examples and think/pair/write GOAL: To see how comparing anatomy can support the theory of evolution by natural selection.

  2. Homologous Structures RIGHT • DEFINITION: Parts of organisms that are similar in origin and structure are called homologous structures. • INFORMATION: • Are the result of evolution • Can indicate how closely two or more species share common ancestors • Not all structures are homologous.

  3. 6.2 Biological Evidence Homologous Structures Examples LEFT Think, Pair, Write: What do you notice? The bones in the upper limbs of these animals are homologous structures.

  4. Homologous Structures Examples LEFT Think, Pair, Write: What do you notice?

  5. Quick questions • What is a homologous structure? • What is an example of a homologous structure?

  6. 6.2 Biological Evidence Vestigial Structures RIGHT • DEFINTION: structures that have no function in their present-day form. • INFORMATION: Scientists hypothesize that the structures once functioned in an ancestor.

  7. Vestigial Structures LEFT • EXAMPLES: • Pelvic bones in whales • Pelvic spurs in boas and pythons • Eyes in cavefish • Tail bones in humans • Who knows of any other?

  8. Quick questions • What is a vestigial structure? • What is an example of a vestigial structure?

  9. 6.2 Biological Evidence Embryology RIGHT • DEFINTION: The science of the development of embryos from fertilization to birth is embryology. • INFORMATION: The more closely related species are, the more features they share during development.

  10. LEFT Think, Pair, Write: What do you notice?

  11. Tunicates are thought to be related to vertebrates because they have proto backbone during development but then lose it. Another example LEFT • Tunicates Think, Pair, Write: What do you notice?

  12. Quick questions • What is a is embryology? • What is does embryology help us understand? • What was the main goal for today?

More Related