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« on: April 12, 2015, 06:47:06 AM »
Evolution is a slow process, really, really, really slow process in which totally random mutations happen and decide of later future of whole specie. Mutations decide of the future because they are brought up to natural selection. It's not simply like "always positive mutations win and negative loose" but it's a bit more complex. We've got 3 types of mutations - positive,neutral and negative.
Negative mutations in a period of thousands, even tens of thousands of years make the number of animals representing particular specie with this negative mutation to decrease. Neutral mutation in current (the time of when mutation happened to occur) time does nothing and just stays, but there might be a change of environment, when neutral mutation turns to positive, and positive mutation makes number of animals representing particular specie with this mutation to increase. 1 of 3 particular mutations can be positive or negative or neutral in 2 ways. It can be positive, negative or neutral in 2 ways just by being positive, negative, etc., etc. in 1 way of 2, or by being positive, etc. etc. in 2 of 2 ways. These 2 ways are these two points:
a) reproduction factor,
b) survival factor.
Reproduction, just as survival factor, can be positive or negative or neutral (nothing changed). If in specie mutation happened, we count these two parts of the same species the subspecies. The subspecie of a specie A, let's say A1-2, has a positive mutation that makes its reproduction factor bigger (wider loins for example), the subspecie A1-2 will - in a period of time of thousands of years - eventually displace subspecie A2-2 without this mutation.
And let's get back to the "It's not simply like >>always positive mutations win and negative loose<<" point. Yes, negative mutation can actually displace specie without this mutation, so we can say it can displace a specie that is healthier. How? Species were living on several places on Earth, and also cataclysms were taking place on several places on the Earth, so if subspecie A-H (subspecie of specie A without negative mutation, therefore "healthier" - H) meets cataclysm and subspecie A-S (subspecie being "sick" - negative mutation) don't, then subspecie A-H will eventually die and subspecie A-S survive, therefore the "displacement" won't happen, therefore A-S will later be no A-S because it doesn't have any other subspecie to compare with, that it can measure if mutation is negative or not and actually it has even a future for maybe positive mutations that will "cancel" the effects of last negative mutation. I think I explained it that much that some idiot on this forum or other "feed-me-with-your-idiotic-statements" guys won't say stupidest thing about evolution.
cheers