Mechanisms of Natural Selection: Altruism and Kin Selection

We have learned all about so-called "survival of the fittest" which is a phrase we associate with natural selection. We typically associate this concept with competition for resources, but there are situations in which this involves the complete opposite, in the form of cooperative and altruistic behavior. What does this look like, in what species can we see it, and how does it come about on the biological level? Let's take a look!

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