A phylogenetic tree shows the evolution of relationships among different organisms.
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organism from whom one is descended.
large phylum of aquatic animals (such as jellies and corals) characterized by radial body symmetry and stinging tentacles.
change in heritable traits of a population over time.
having to do with genes, inherited characteristics or heredity.
animal without a spine.
animal with hair that gives birth to live offspring. Female mammals produce milk to feed their offspring.
living or once-living thing.
study of how organisms relate to each other as they develop over time.
group of similar organisms that can reproduce with each other.
organism with a backbone or spine.
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Evolution
In the mid-1800s, Charles Darwin famously described variation in the anatomy of finches from the Galapagos Islands. Alfred Russel Wallace noted the similarities and differences between nearby species and those separated by natural boundaries in the Amazon and Indonesia. Independently they came to the same conclusion: over generations, natural selection of inherited traits could give rise to new species. Use the resources below to teach the theory of evolution in your classroom.
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Evolution
In the mid-1800s, Charles Darwin famously described variation in the anatomy of finches from the Galapagos Islands. Alfred Russel Wallace noted the similarities and differences between nearby species and those separated by natural boundaries in the Amazon and Indonesia. Independently they came to the same conclusion: over generations, natural selection of inherited traits could give rise to new species. Use the resources below to teach the theory of evolution in your classroom.