Do Now 1. What is biogeography? 2. Why do distantly related species in very different places sometimes share similar traits? Study of where organisms live now and where they and their ancestors lived in the past. Biogeographical patterns • Closely related species differentiate in slightly different climates. • Very distantly related species develop similarities in similar environments.
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Do Now 1. What is biogeography? 2. Why do distantly related species in very different places sometimes share similar traits? Study of where organisms live.
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Do Now
1. What is biogeography?
2. Why do distantly related species in very different places sometimes share similar traits?
Study of where organisms live now and where they and their ancestors lived in the past.
Biogeographical patterns• Closely related species
differentiate in slightly different climates.
• Very distantly related species develop similarities in similar environments.
Homework and Announcements
Read/Notes 26.3 and pages 902-903Typed Lab Report: turnitin.comUSA TestPrep
Title: Evidence of Evolution – 16.4
How does the geographic distribution of species today relate to their evolutionary history?
How do fossils help to document the descent of modern species from ancient ancestors?
What do homologous structures and similarities in embryonic development suggest about the process of evolutionary change?
How can molecular biology be used to trace the process of evolution?
What does recent research on the Galapagos finches show about natural selection?
SWBAT describe evidence of evolution.
Brain Pop – Charles Darwin
Evidence of EvolutionDarwin hypothesized that animals
evolved because of natural selection… what is that??
BiogeographyPatterns in the distribution of living
and fossil species tell us how modern organisms evolved from their ancestors.
BiogeographyClosely related but different
Distantly related but similar
Alike species with different traits
Different species with same traits (similar environment)
Age of Earth & Fossils
Radioactive data shows Earth to be 4.5 billion years old – supporting Darwin’s theory (lots of time for evolution)
Recent fossil records are filling the gaps, showing that modern species evolved from extinct ancestors.
Comparing Anatomy & EmbryologyEvolutionary theory explains the existence
of homologous structures adapted to different purposes as the result of descent with modification from a common ancestor.