What is the unifying principle of biology?
Evolution
What does the taxonomic hierarchy include?
Kingdom, Phylum, Class, Order, Family, Genus, Species
Contrast immutists and evolutionists.
Immutists believe species do not change; evolutionists believe in change over time.
Who was a famous evolutionist but was wrong about evolution?
Lamarck
Who inspired Darwin's understanding of natural selection?
Wallace
What are the two observations Darwin made?
Variation among individuals; more individuals are produced than can survive.
What happens to advantageous traits over generations?
They increase in frequency due to natural selection.
How can selective pressure change?
It may shift as environmental conditions change.
What is a direct observation of evolution?
Antibiotic resistance in bacteria.
What is a homology?
A similarity due to shared ancestry.
What are molecular and morphological homologies?
Molecular homologies are similarities at the DNA level; morphological are structural similarities.
What do fossils provide evidence of?
Intermediate morphologies and historical ranges.
How does biogeography relate to evolution?
Species distribution reflects evolutionary history.
What is the main evidence for evolution?
Fossils
Biogeography
Natural disasters
Homologies
Climate change
Genetic mutations
What is the main evidence for evolution?
Fossils
Biogeography
Natural disasters
Homologies
Climate change
Genetic mutations
What is a source of confusion in evolutionary theory?
The mechanisms of change and selection may not be fully understood.
Contrast immutists and evolutionists.
Immutists believe species do not change; evolutionists believe in change over time.
What are the two observations Darwin made?
Variation among individuals; more individuals are produced than can survive.
What happens to advantageous traits over generations?
They increase in frequency due to natural selection.
What are molecular and morphological homologies?
Molecular homologies are similarities at the DNA level; morphological are structural similarities.
What is the main evidence for evolution?
Genetic mutations
Homologies
Climate change
Fossils
Biogeography
Natural disasters
What is a source of confusion in evolutionary theory?
The mechanisms of change and selection may not be fully understood.
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