Dna

pophead said:
about mutations. when mutations occur it is because cells have lost information and are damaged. therefore no good mutation can occur.
So if you had $100.00 in the bank but their computer system lost the decimal, that wouldn't benefit you simply because it wasn't intentional? (ignoring the moral aspects of taking $900 that isn't yours of course) Or what if the data representing the 1 got damaged and was read as a 7? Very simplistic example, but I think it makes the point. It's unlikely that a mistake will be in your favor, but considering the huge number of mistakes that occur, there are bound to be some that work out.
 
I think that's a good example- I think a good mutation to illustrate how these things can benefit a species and become entrenched in the population is sickle cell anemia. mutations are just changes in the code, many are bad, but some are just simple things like a new color morph showing up in a species of birds, things like that, and some in the right combination are beneficial, and help an individual survive and pass on those same genes. .
 
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