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Exploring Evolutionary Evidence: Darwin's Finches to Convergent Evolution

Dive into the evidence for evolution, from Darwin's finches showcasing natural selection to artificial selection in domestic animals. Discover how fossils and anatomical structures provide insights into evolutionary transitions over time. Explore convergent evolution and test your knowledge with true/false and multiple-choice questions.

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Exploring Evolutionary Evidence: Darwin's Finches to Convergent Evolution

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  1. Evidence for Evolution 1.2.3.1.1 By: JP Garcia, Felipe Aguilera, Zac Christian, Bobby Garcia, Mikey Vasquez, and Augustine Ginto

  2. Darwin’s finches: evidence of natural selection • Natural selection has been responsible for changes in the shape of the beak corresponding to characteristics of the available food supply • A beak better suited to the distribution of available seed types would become more common in subsequent generations

  3. Artificial Selection • selection imposed on plants and animals by humans • operates by favoring individuals with certain phenotypic traits, allowing them to reproduce and pass their genes on to the next generation • Human-imposed selection has produced a great variety of breeds of cats, dogs, pigeons, and other domestic animals • Dogs resulted from selection for certain traits

  4. Fossil evidence • Fossils can be used to construct a record of major evolutionary transitions over long periods of time • Horses, for example, evolved from small, forest-dwelling animals to the large and fast plains dwelling species alive today

  5. Anatomical evidence • Homologous structures may have different appearances and functions even though derived from the same ancestral body part • The existence of vestigial structures supports the concept of common ancestry among organisms that share them

  6. Convergent evolution • Convergent evolution is the independent development of similar structures in organisms that are not directly that are not directly related; often found in organisms living in similar environments • the evolution of similar forms in different lineages when exposed to similar selective pressures

  7. True/False • Fossils can be used to construct a record of major evolutionary transitions over periods of time. true • Horses never evolved and have been large animals. False • Cats, dogs, pigeons, and other domestic animals evolved naturally. False

  8. Multiple Choice

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