Questions relating to how the field of biology has developed over time.

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First documented beneficial mutation?

I've been reading up on beneficial mutations, and am curious when we discovered and documented the first one. Can anyone point me to the first documented beneficial mutation? Per request, let me ...
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What are phenetic analyses used for?

Phenetics (grouping of organisms based on similarity) used to be claimed to be an alternative to cladistics, but now it is widely accepted that phenetic analyses cannot be used to infer evolutionary ...