I forget a term and it's pissing me off

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The discussion centers on the concept of evolution, specifically regarding the definition of an individual increasing the fitness of another at the expense of its own. This idea is linked to altruism, although there is debate about the existence of true altruism in evolutionary terms. The conversation also touches on the broader debate about whether natural selection operates at the level of populations, individuals, or genes, highlighting the complexity of evolutionary theory and the differing perspectives on these mechanisms.
anisotropic
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In evolution, the definition is something along the lines of:

When one individual increases the fitness of another individual either directly or indirectly, at the cost of decreasing its own fitness. (many argue there is no true form of this)

By the way, it is not related to symbiosis in any way.

I forget what the damn word is, but I need to remember it. Can anyone help me out?
 
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Does it have something to do with altruism?
 
Bingo, thanks.
 
anisotropic said:
(many argue there is no true form of this)
It is an interesting debate...whether selection functions at the level of a population, an individual, or a gene.
 

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