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Darwin’s Discovery and Chimps and Humans.   BI.7 a. Students know why natural selection acts on the phenotype rather than the genotype of an organism.

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Presentation on theme: "Darwin’s Discovery and Chimps and Humans.   BI.7 a. Students know why natural selection acts on the phenotype rather than the genotype of an organism."— Presentation transcript:

1 Darwin’s Discovery and Chimps and Humans

2   BI.7 a. Students know why natural selection acts on the phenotype rather than the genotype of an organism.  BI. 8. a. Students know how natural selection determines the differential survival of groups of organisms.  BI. 8. b. Students know a great diversity of species increase the chance that at least some organisms will survive major changes in the environment  BI. 8. e Students know how to analyze fossil evidence with regard to biological diversity, episodic speciation, and mass extinction. Standards:

3  SWBAT (in regards to human evolution)  Explain how natural selection determines the differential survival of groups of organisms.  Analyze multiple sources of evidence for evolution.  Explain how a great diversity of species increase the chance that at least some organisms will survive major changes in the environment  Analyze fossil evidence with regard to biological diversity, episodic speciation, and mass extinction. Objectives:

4   “Light will be thrown on the origin of man and his history”  Didn’t talk about humans in On the Origin of Species, to avoid prejudice of his findings  1871, The Descent of Man and Selection in Relation to Sex Darwin

5   Gravity  Cell Theory  Mendelian Genetics Accepted Theories

6  Human Evolution

7   Humans and great apes shared a common ancestor 5 million years ago  Common ancestor was a knuckle-walker What is Human Evolution?

8   Modern humans have an ancestor that evolved into the humans we have today  Chimpanzees are closely related to humans because they share this ancestor What is Human Evolution?

9   Big brain, relative to body size  More upright posture  Arm structure (side to side)  Teeth  Binocular vision  Opposable thumb  Five fingers and toes Morphological Evidence of Shared Ancestry

10   DNA sequences 96-99% identical  DNA sequences code for similar proteins  Both have lots of deletions in their DNA sequences  Allows opportunities for mutations (evolution) Molecular Evidence of Shared Ancestry between Chimps and Humans

11   Tool usage  Child rearing  Social interactions  Emotions  Delayed sexual maturity  Hunting Shared Behaviors

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20   If chimps and humans share a common ancestor then this would suggest that humans’ ancestor changed over time=evolution!!!! BIG BIG IDEA!!!

21   True/False-Humans evolved from monkeys.  How similar are humans and chimps genetically?  List 3 morphological similarities between humans and chimpanzees.  What is the evolutionary relationship between humans and other primates? Summary Questions


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