Turtles, lizards, snakes, crocodiles, birds, and mammals are all amniotes whose offspring gestate within an amniotic membrane inside a parent or inside an egg. Click the branch where "amniotic membrane" should most likely be labeled as a derived character. O Targets placed: 0/1 You can place up to 1 targets + Undo Delete selected Hagfish Lampreys Lobe-finned Fish Amphibians Turtles Lizards Snakes Crocodiles Birds Mammals Remove All

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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### Amniotes and the Amniotic Membrane

**Overview:**
Turtles, lizards, snakes, crocodiles, birds, and mammals are all classified as amniotes. This group is characterized by their method of gestation, which occurs within an amniotic membrane. This process takes place either inside a parent or within an egg.

**Diagram Explanation:**
The diagram illustrates a phylogenetic tree showing evolutionary relationships among various groups of animals:

- **Groups Illustrated:**
  - Hagfish
  - Lampreys
  - Lobe-finned Fish
  - Amphibians
  - Turtles
  - Lizards
  - Snakes
  - Crocodiles
  - Birds
  - Mammals

- **Structure:**
  - The tree branches indicate lines of evolutionary descent. 
  - The branching points represent common ancestors.

- **Assignment:**
  - The task is to identify where the trait "amniotic membrane" should be labeled as a derived character in the tree. 

**Instructions:**
Click on the branch of the phylogenetic tree where the development of the amniotic membrane likely occurred. 

**Interactive Element:**
- You have the ability to place one target on the diagram to indicate your answer.
- Actions such as "Undo," "Delete selected," and "Remove All" allow for adjustments to your placement. 

This educational exercise helps to understand evolutionary relationships and the significance of derived traits like the amniotic membrane among different animal groups.
Transcribed Image Text:### Amniotes and the Amniotic Membrane **Overview:** Turtles, lizards, snakes, crocodiles, birds, and mammals are all classified as amniotes. This group is characterized by their method of gestation, which occurs within an amniotic membrane. This process takes place either inside a parent or within an egg. **Diagram Explanation:** The diagram illustrates a phylogenetic tree showing evolutionary relationships among various groups of animals: - **Groups Illustrated:** - Hagfish - Lampreys - Lobe-finned Fish - Amphibians - Turtles - Lizards - Snakes - Crocodiles - Birds - Mammals - **Structure:** - The tree branches indicate lines of evolutionary descent. - The branching points represent common ancestors. - **Assignment:** - The task is to identify where the trait "amniotic membrane" should be labeled as a derived character in the tree. **Instructions:** Click on the branch of the phylogenetic tree where the development of the amniotic membrane likely occurred. **Interactive Element:** - You have the ability to place one target on the diagram to indicate your answer. - Actions such as "Undo," "Delete selected," and "Remove All" allow for adjustments to your placement. This educational exercise helps to understand evolutionary relationships and the significance of derived traits like the amniotic membrane among different animal groups.
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