Milesnmiles -> RE: Evolution/Creation debate (2/23/2014 8:36:44 PM)
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ORIGINAL: GotSteel Here goes: quote:
ORIGINAL: Helena Curtis and N. Sue Barnes, Biology, 5th ed. 1989 Worth Publishers, p.974 In fact, evolution can be precisely defined as any change in the frequency of alleles within a gene pool from one generation to the next. We know the above happens, it's been observed numerous times in and outside of the laboratory. Evolution as defined above is a fact. Even Ken Ham is forced to admit that evolution is happening (though he believes in a sort of ridiculous hyper-evolution) the guy is just ignoring a mountain of evidence to claim that evolution didn't used to happen. I'll refrain from talking about most of the mechanisms at the moment and simply try to address some of your misunderstandings. Though there is a great introduction to evolutionary biology article here which they consider a must read for anyone who wants to have an intelligent discussion on the matter: http://www.talkorigins.org/faqs/faq-intro-to-biology.html So anyway "change in the frequency of alleles within a gene pool from one generation to the next" let's talk about what we can expect that to look like and it's not one crocoduck hunting around for another crocoduck to mate with. Instead the transition from reptile to bird involved a population of climbing reptiles becoming better suited to their environment. Now the changes we're talking about, slow isn't quite the right word nor gradual...compatible is the best word I can come up with. So you asked something about such animals would survive during the many, many generations before they had working wings. We have fossils from that transition but instead of getting into that I'll just say, ask the sugar glider: quote:
ORIGINAL: GotSteel Here goes: quote:
ORIGINAL: Helena Curtis and N. Sue Barnes, Biology, 5th ed. 1989 Worth Publishers, p.974 In fact, evolution can be precisely defined as any change in the frequency of alleles within a gene pool from one generation to the next. We know the above happens, it's been observed numerous times in and outside of the laboratory. Evolution as defined above is a fact. Even Ken Ham is forced to admit that evolution is happening (though he believes in a sort of ridiculous hyper-evolution) the guy is just ignoring a mountain of evidence to claim that evolution didn't used to happen. I'll refrain from talking about most of the mechanisms at the moment and simply try to address some of your misunderstandings. Though there is a great introduction to evolutionary biology article here which they consider a must read for anyone who wants to have an intelligent discussion on the matter: http://www.talkorigins.org/faqs/faq-intro-to-biology.html So anyway "change in the frequency of alleles within a gene pool from one generation to the next" let's talk about what we can expect that to look like and it's not one crocoduck hunting around for another crocoduck to mate with. Instead the transition from reptile to bird involved a population of climbing reptiles becoming better suited to their environment. Now the changes we're talking about, slow isn't quite the right word nor gradual...compatible is the best word I can come up with. So you asked something about such animals would survive during the many, many generations before they had working wings. We have fossils from that transition but instead of getting into that I'll just say, ask the sugar glider: quote:
ORIGINAL: GotSteel It should be pretty straight forward to picture that some of the tree climbing ancestors of the sugar glider had skin that was a bit looser than others. The increased surface area made those rodents a bit less likely to fall to their deaths while leaping around and therefore a bit more likely to spread their genes. Therefore over time more and more of those rodents had looser skin between their limbs. This cycle then repeated and repeated and repeated causing a larger and larger gliding surface. What happens from there, well check out this video on flying squirrel, see how they're controlling their gliding? Subsequent generations progressively getting better and better at that skill leads to being able to produce thrust until you end up with something like the bat: Maybe I missed it. But in all of this patting yourself on the back, I didn't see how the living things that exist all around us ended up with differing numbers of chromosomes, perhaps you could elucidate. ;-)
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