an infected individual is treated with anti-HIV drugs, the population has a wide range of different mutants to choose from, some of which may be resistant to the drug: The virus is made more efficient by its very inefficiency.
2007-05-18 11:20:39 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Biology
The HIV virus is a good example of evolution in action. The virus keeps evolving to keep ahead of the human immune system and any kinds of preventive vaccines humans may develop.
There are some humans whose immune system can ward off the HIV virus. If natural selection were allowed to proceed, those few would survive while everyone else succumbed to the virus. Then, those few remaining immune humans could repopulate with offspring whose immune system could also fight this virus.
This may already have happened in the other great apes. They seem to be generally immune to the effects of HIV and AIDS.
2007-05-18 14:27:50 · answer #1 · answered by Joan H 6 · 0⤊ 0⤋
human evolution is extremely slow compared to how a virus ( or bacteria and mycoplasma) can develope and change, ie mutate.
to understand how a virus works, go to "howstuffworks.com. and type in viruses. it gives you a great understanding of how and why viruses effect any type of host being, therefore telling how it can be very difficult to "control", such as in HIV.
2007-05-18 11:50:25 · answer #2 · answered by navillus1986 2 · 0⤊ 0⤋
There are many aspects of evolution that are not beneficial against HIV. Hair color, color, a tail, and other things aren't beneficial against HIV. HIV is harmful to all of us and we can't prevent it in anyway.
2007-05-18 11:42:57 · answer #3 · answered by UnknownD 6 · 0⤊ 1⤋
Eurasian ancestry is beneficial because our ancestors had to fight similar diseases in the distant past.
2007-05-18 12:59:29 · answer #4 · answered by JimZ 7 · 0⤊ 0⤋
You believe in evolution?
2007-05-18 16:19:03 · answer #5 · answered by fastest73torino 2 · 0⤊ 0⤋