Evo3 Flashcards
(24 cards)
What are the five main areas of evidence for evolution?
Paleontology, biogeography, anatomy, embryology, molecular biology/genetics.
What does the fossil record show?
Organisms change over time in a chronological sequence.
What are transitional fossils?
Fossils that show intermediary stages between different species.
What is biogeography?
The study of species distribution across geographic areas.
What is the Wallace Line?
A biogeographic boundary separating Asian and Australian faunal zones.
What are homologous structures?
Structures with similar origin but possibly different functions — evidence of common ancestry.
What are analogous structures?
Structures with similar function but different origin — result of convergent evolution.
What are vestigial structures?
Structures with no current use but functional in ancestors (e.g., wisdom teeth).
What does embryology suggest about evolution?
Similar embryos suggest common ancestry.
What does molecular biology reveal about evolution?
Similar DNA and proteins indicate evolutionary relationships.
Humans and chimps share 98.7% of DNA.
What is divergent evolution?
Related species become more different due to adaptation to different environments.
What is convergent evolution?
Unrelated species evolve similar traits due to similar environmental pressures.
What are the five main areas of evidence for evolution?
Paleontology, biogeography, anatomy, embryology, molecular biology/genetics.
What does the fossil record show?
Organisms change over time in a chronological sequence.
What are transitional fossils?
Fossils that show intermediary stages between different species.
What is biogeography?
The study of species distribution across geographic areas.
What is the Wallace Line?
A biogeographic boundary separating Asian and Australian faunal zones.
What are homologous structures?
Structures with similar origin but possibly different functions — evidence of common ancestry.
What are analogous structures?
Structures with similar function but different origin — result of convergent evolution.
What are vestigial structures?
Structures with no current use but functional in ancestors (e.g., wisdom teeth).
What does embryology suggest about evolution?
Similar embryos suggest common ancestry.
What does molecular biology reveal about evolution?
Similar DNA and proteins indicate evolutionary relationships.
Humans and chimps share 98.7% of DNA.
What is divergent evolution?
Related species become more different due to adaptation to different environments.
What is convergent evolution?
Unrelated species evolve similar traits due to similar environmental pressures.
