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Questions and Answers
Who conceived the theory of evolution by natural selection?
Who conceived the theory of evolution by natural selection?
- Gregor Mendel and Thomas Hunt Morgan
- Charles Darwin and Alfred Russel Wallace (correct)
- Louis Pasteur and Robert Koch
- Antonie van Leeuwenhoek and Carl Linnaeus
What is evolution?
What is evolution?
- The change in non-heritable characteristics of biological populations over successive generations
- The adaptation of organisms to their physical and biological environments
- The increase in the number of offspring in a population
- The change in heritable characteristics of biological populations over successive generations (correct)
What processes act on genetic variation to cause evolution?
What processes act on genetic variation to cause evolution?
- Artificial selection and genetic engineering
- Natural selection and genetic drift (correct)
- Environmental adaptation and migration
- Mutation and genetic recombination
What has the process of evolution given rise to at every level of biological organization?
What has the process of evolution given rise to at every level of biological organization?
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What are the observable facts that establish evolution by natural selection?
What are the observable facts that establish evolution by natural selection?
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Study Notes
Evolution by Natural Selection
- Charles Darwin conceived the theory of evolution by natural selection.
Definition of Evolution
- Evolution is the change in the inherited characteristics of a population of organisms over time.
Processes of Evolution
- Genetic variation is acted upon by the following processes to cause evolution:
- Mutation
- Gene flow
- Genetic drift
- Natural selection
Consequences of Evolution
- The process of evolution has given rise to diversity at every level of biological organization, including:
- Molecules
- Cells
- Organisms
- Populations
- Species
- Ecosystems
Evidence for Evolution
- The following observable facts establish evolution by natural selection:
- The fossil record
- Comparative anatomy and embryology
- Molecular biology
- Biogeography
- Observable evolutionary changes in natural populations
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