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09 patterns of evolution
This document discusses four patterns of evolution: adaptive radiation, where a single species evolves into many new species occupying different ecological niches; divergent evolution, the evolution of an ancestral group into many different forms; convergent evolution, the independent evolution of similar traits in distantly related species; and coevolution, the evolution of one species in response to changes in another interacting species. Examples are given for each pattern.
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Introduction to the various patterns of evolution that shape species and their traits.
Discussion on adaptive radiation where a species rapidly evolves into many species, exemplified by Galapagos finches.
Overview of divergent evolution showcasing large-scale evolution from a common ancestor into different forms.
Examines convergent evolution, where similar traits evolve in unrelated species, illustrated by wings and fins.
Describes coevolution, where species influence each other's evolution, as seen with Brazil nuts and agoutis.
09 patterns of evolution
- 1.
- 2. Patterns of Evolution Adaptiveradiation: The relatively rapid evolution of a single species into many new species, filling a variety of formerly empty ecological niches. i.e. Galapagos finches have adapted to eat very specific diets
- 3. Patterns of Evolution Divergentevolution: The large-scale evolution of a group into many different forms i.e. An ancestral mammal evolved into several of the mammals we see today
- 4. Patterns of Evolution Convergentevolution: The evolution of similar traits in distantly related species. i.e. Wings and fins evolved on distantly related species
- 5. Patterns of Evolution Coevolution:A process in which one species evolves in response to the evolution of another species. i.e. Brazil nuts have evolved extremely hard shell, which have have selected agouti with strong jaws and teeth that can open the shell