I haven't yet seen a truly beneficial mutation demonstrated by anyone here.
After people had pointed out sickle cell anemia.
Oh for pete's sake, FOLLOW THE ARGUMENT!!! I've answered this a dozen times already. I said ****TRULY**** BENEFICIAL. There is no way a mutation that protects against one disease while causing another is TRULY beneficial.
I think the problem is the definition of 'truly beneficial' (see, you can say it without shouting
).
You are using a human intellectual viewpoint to define it - the sickle cell mutation can't be truly beneficial because as well as giving people some protection against malaria it also adversely affects their health.
Unfortunately in evolutionary terms this definition is completely worthless. The
only thing that counts in an evolutionary definition of truly beneficial is does it give you an advantage in reproduction.
There are NO examples ANYONE has produced yet of a TRULY beneficial mutation, one that produces health and vigor.
As counter-intuitive as it seems, health and vigour are not, in and of themselves, worth anything at all. It's all about having offspring. Of course health and vigour may well help you have more offspring than your competitors - but it ain't necessarily so.
Mind you, I'm not a biologist so I may be talking out my backside
Oops! Wrong Planet