Lesson plan
Maladaptation
In evolution, a maladaptation ( ) is a trait that is (or has become) more harmful than helpful, in contrast with an adaptation, which is more helpful than harmful. All organisms, from bacteria to humans, display maladaptive and adaptive traits. Like adaptation, maladaptation may be viewed as occurring over geological time, or within the lifetime of one individual or a group. Maladaptation can arise when adaptations to environmental challenges have unintended harmful effects by either decreasing the current fitness of the organism or creating new risks which may decrease survivability. This could be caused by changes in trait distribution from genetic loading, exogenous environmental changes in the fitness landscape, or feedback in eco-plasticity, altering the fitness landscape. It can also signify an adaptation that, whilst reasonable at the time, has become less and less suitable and more of a problem or hindrance in its own right, as time goes on. This is because it is possible for an adaptation to be poorly selected or become more of a dysfunction than a positive adaptation, over time.
Article summary
In evolution, a maladaptation ( ) is a trait that is (or has become) more harmful than helpful, in contrast with an adaptation, which is more helpful than harmful. All organisms, from bacteria to humans, display maladaptive and adaptive traits. Like adaptation, maladaptation may be viewed as occurring over geological time, or within the lifetime of one individual or a group. Maladaptation can arise when adaptations to environmental challenges have unintended harmful effects by either decreasing the current fitness of the organism or creating new risks which may decrease survivability. This could be caused by changes in trait distribution from genetic loading, exogenous environmental changes in the fitness landscape, or feedback in eco-plasticity, altering the fitness landscape. It can also signify an adaptation that, whilst reasonable at the time, has become less and less suitable and more of a problem or hindrance in its own right, as time goes on. This is because it is possible for an adaptation to be poorly selected or become more of a dysfunction than a positive adaptation, over time.
Key claims
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.