>
> You said it - they became one. Subject to basically identical
> selecive pressures. If you seperated a mitochondria from a Animal
> cell today, it dies - it dosn't have all the genes it needs to survive.
>
> Thus, talking of selective pressures on them being different..well, I
> don't think you can.
>But the genes in mitochondria can have their own agenda. Especially if they find
>themselves in males. Remember that being a sperm mitochondria is a dead end. You
>don't make into the embryo. At least you aren't supposed to.But if you can figure out
>a way to invade the egg and kill the egg mitonchondria or at least if you can poison
>the other male mitochondria you do better. There are bizarre and counter-intuitive
>mutations that do just this, at great cost to the "host" individual and all other
>genes. A significant part of our genome is dedicated to fighting these ultimately
>selfish replicators. Interlocus contest evolution is one of the most interesting
>things and bizarre things out there in genetics.
> There is, to some degree, competition within the Human body, for
> example in the brain as it forms in babies. Cells "try" to grow as
> rapidly as they can, and in the end only the top 10% or so become
> neural cells - the failures don't die, except as their potential to
> become neural cells is coincerned, they become structural cells in
> the Brain.
>
> You have to beware taking compreition within the body too far.
>
> Very _Earth_ isn't this :)
>
> Andy
> Dawn Falcon
