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Was watching a BBC documentary(1) about Charles
Darwin the other day. In it Richard Dawkins was interviewing a prostitute in
Kenya who apparently has immunity to HIV. There's a significant percentage
of the population infected with HIV, a high rate of clients per day for
Nairobi prostitutes who commonly don't use condoms so the odds against
prostitutes there contracting HIV are really low. So prostitutes like this
lady are current and real life examples of humans evolving purely by natural
selection to beat some virus (i.e. lots and lots of people die but only the
one with genetic advantage survives to reproduce)! Kind of ironic that the
very occupation that's highly likely to get you infected with HIV is one
that potentially reveals the genetic sequence needed to avoid it. Links: 1.
http://ping.fm/9dT6v
This image was sent in by Lisa 2 years ago and has been seen 346 times.
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