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Patterns of Evolution Notes5/10/10 1) Coevolution: the changes in two species over time that occur which results in species directly depending on one another. Examples include: - Orchids & Moths - Tree & Ants - Humans & Bacteria - Bees & Flowers 2) Convergent Evolution: - Occurs when unrelated species who reside in similar habitats begin to take on similar characteristics over time. Examples: Sharks & Dolphins- coloration, body size, fins 3) Divergent: Creatures share a common ancestor but because of changes to geography over time they take on different characteristics. - Adaptive Radiation – due to isolation of certain populations, individuals begin to take on different characteristics (over time) most suitable to their surroundings (Ex: Darwin’s Finches). Very common on island habitats Artificial Selection – Humans select the traits for the animals they are breeding.