Quantum Windbag
Gold Member
- May 9, 2010
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the less I knew.
It seems that Dawkins simple explanation of genetics and evolution, while not wrong, is a lot more simplistic than I thought. We all learned in high school how genes are the basic mechanism of evolution. We were taught that they determine everything from what species we are to the color of our hair.
Ever wonder how all of that fits in with the fact that we are 99% chimpanzee? Why aren't we all 3 foot tall and hairy? Could that idiot from Georgia be right when he says that a pig mated with a chimpanzee a few thousand generations ago, and that was the birth of humans?
It turns out that it is a bit more complicated than that. It seems that a species, or even an individual, can, under the right circumstances, go back into their genetic code and reread the instructions in a way that results in actual physical changes to the individual.
The most common example of this is the locust. Under the right circumstances a grasshopper can, when confronted with the scarcity of food in its neighborhood and/or overcrowding actually undergo a physical change, and behavioral, change. The weirdest part is that they can actually change back to normal after they find a new food source or enough of their neighbors die off.
Why it's time to lay the selfish gene to rest ? David Dobbs ? Aeon
It seems that Dawkins simple explanation of genetics and evolution, while not wrong, is a lot more simplistic than I thought. We all learned in high school how genes are the basic mechanism of evolution. We were taught that they determine everything from what species we are to the color of our hair.
Ever wonder how all of that fits in with the fact that we are 99% chimpanzee? Why aren't we all 3 foot tall and hairy? Could that idiot from Georgia be right when he says that a pig mated with a chimpanzee a few thousand generations ago, and that was the birth of humans?
It turns out that it is a bit more complicated than that. It seems that a species, or even an individual, can, under the right circumstances, go back into their genetic code and reread the instructions in a way that results in actual physical changes to the individual.

The most common example of this is the locust. Under the right circumstances a grasshopper can, when confronted with the scarcity of food in its neighborhood and/or overcrowding actually undergo a physical change, and behavioral, change. The weirdest part is that they can actually change back to normal after they find a new food source or enough of their neighbors die off.

‘Different groups of animals succeed for different reasons,’ says Wray. ‘Primates, including humans, have succeeded because they’re especially flexible. You could even say flexibility is the essence of being a primate.’ According to Wray, West-Eberhard and many others, this recognition of gene expression’s power requires that we rethink how we view genes and evolution. For a century, the primary account of evolution has emphasised the gene’s role as architect: a gene creates a trait that either proves advantageous or not, and is thus selected for, changing a species for the better, or not. Thus, a genetic blueprint creates traits and drives evolution.
This gene-centric view, as it is known, is the one you learnt in high school. ItÂ’s the one you hear or read of in almost every popular account of how genes create traits and drive evolution. It comes from Gregor Mendel and the work he did with peas in the 1860s. Since then, and especially over the past 50 years, this notion has assumed the weight, solidity, and rootedness of an immovable object.
But a number of biologists argue that we need to replace this gene-centric view with one that more heavily emphasises the role of gene expression — that we need to see the gene less as an architect and more as a member of a collaborative remodelling and maintenance crew.
‘We have a more complicated understanding of football than we do genetics and evolution. Nobody thinks just the quarterback wins the game’
Why it's time to lay the selfish gene to rest ? David Dobbs ? Aeon