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Biology / Selfish Gene
« on: April 25, 2010, 09:45:10 PM »
First of all, evolution is alot more complicated then a few genes fighting each other. DNA codes for RNA which codes for protiens, which help assemble more complex structures, themselves building more complex structures, and so on untill you get to the individual, and theres no reason it should stop there because, as numsgil pointed out, evolution often acts on the level on an entire population, not just individuals (look at colony insects like bees and ants.) The concept of genes fighting against each other is rediculous because in order to have a gene that could actually do that, it would have to be rediculously complex to the point were its improbable it could have evolved from chance in the first place. There are examples like the T gene in mice, which makes 90 % of the sperm carry its gene, but its not like theres genes which litterally change the way we behave like in your dad saving his kids example. After 16 generations, you are related to 65,536 differirent organisms that lived 16 generations before you. A small population of organisms will very quickly become interrelated, and so the big differences matter more in seperate populations. In order for a single gene to survive the incredible odds of being passed down after 16 generations, it will have to have a significant effect on the organism.