File:Lamarck's Two-Factor Theory.svg
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Summary[edit]
| Summary | |
|---|---|
| Description | Lamarck's two-factor theory involves 1) a complexifying force that drives animal body plans towards higher levels (orthogenesis), and 2) an adaptive force that causes animals with a given body plan to adapt to circumstances (use and disuse, inheritance of acquired characteristics). Popular views of Lamarckism only consider an aspect of the adaptive force. |
| Source | Wikimedia Commons file page |
| Author | Ian Alexander |
| Permission | See original Commons license details. |
Licensing[edit]
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Official license: CC BY-SA 4.0
License page: CC BY-SA 4.0
Original attribution and file history: Wikimedia Commons
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:26, 5 June 2026 | | 1,123 × 794 (18 KB) | Maintenance script (talk | contribs) | == Summary == Importing file |
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