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Two pertinent ideas of Lamarck were the idea of acquired characteristics and the concept of use and disuse.
Acquired characteristics posited that some experience that an organisms went through in life, such as muscle building due to hard work, would be heritable.
Use and disuse posited that certain organs and traits could develop through use, such as the giraffe trying to eat the leaves on the heights of trees, or that organs or traits could be lost through disuse.
Wiki User
∙ 11y ago
Wiki User
∙ 12y ago- evolution is directional
- inheritance of acquired traits
- aquire traits through felt needs ex: a bird developed its wings because it needed them.
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