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Comparative anatomy
The study of similar morphological features across different species.
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Creationism
The theory of the origin of life, which states that all life was created in its current form by God in a mass creation event that took place about 6000 years ago.
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Inheritance of acquired traits (Lamarckian Inheritance)
The passing on of traits acquired during a parent's lifetime to offspring
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Lamarckism
The theory of evolution stating that species change over time and that this change occurs through use and disuse and the inheritance of acquired traits.
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Use and disuse
The Lamarckian evolutionary idea that if an animal often used a particular trait or characteristic, that trait or characteristic would become more pronounced. Alternately, if a trait went unused, it would become less pronounced.