1. Studying Hominids

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3. Activity 8: Studying Hominids Vertebrate Phylogeny

4. Activity 8: Studying Hominids Introduction  A lineage is a series of populations of a single species or several species descended from a common ancestor. Read the introduction.

5. Activity 8: Studying Hominids  How do biologists study the evolutionary relationships of hominids? Challenge

6. Activity 8: Studying Hominids Skull Measurements

7. Activity 8: Studying Hominids Procedure Cranium Comparisons Skull number Scientific nameCommon name 1Gorilla gorillaGorilla 2Pan troglodytesChimpanzee 3Homo erectus--- 4Homo neanderthalensis“Neanderthal” 5Homo sapiensModern human 6Australopithecus boisei“Zinj”

8. Activity 8: Studying Hominids Procedure

9. Procedure  Based on your data and the information in the reading, what conclusions can you draw about the relationships between the six species?

10. Activity 8: Studying Hominids Procedure

11. Procedure  Add information from this activity or a previous activity to support whether any of the statements are correct or incorrect. Return to Student Sheet 3.1, “Ideas about Evolution”

12. Activity 8: Studying Hominids  Suppose you analyzed the DNA sequences for a number of DNA segments in humans, chimpanzees, and gorillas and you collected the data in the table below. Explain how these data are related to the amino acid data from Part B and how they explain the evolutionary relationship between humans, chimps, and gorillas. Analysis 1 DNA Sequences in Humans, Chimpanzees, and Gorillas DNA ComparisonSequence Difference (%) Human-chimpanzee1.24 Human-gorilla1.62 Chimpanzee-gorilla1.63

13. Activity 8: Studying Hominids  How do biologists study the evolutionary relationships of hominids? Revisit the Challenge

14. Activity 8: Studying Hominids  evidence  evolutionary tree  hominid  lineage Key Vocabulary