Evolution & Ecology Essentials
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What is natural selection?
The process by which heritable traits that improve survival and reproduction become more common over generations.
Who proposed the theory of evolution by natural selection?
Charles Darwin (with Alfred Russel Wallace).
What is a species?
A group of organisms that can interbreed and produce fertile offspring.
What is an adaptation?
A heritable trait that improves an organism's fit to its environment.
What is biodiversity?
The variety of life in an area, across genes, species, and ecosystems.
What is fitness in evolutionary terms?
An organism's reproductive success relative to others in the population.
What is genetic drift?
Random change in allele frequencies, strongest in small populations.
What is gene flow?
The movement of alleles between populations through migration and breeding.
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