If mammals evolved from reptiles why are there no transitional forms,say an animal that has fur like a mammal but lays eggs like a reptile? Well as a matter of fact there are, e.g. the Duck Bill Platypus.
If you have a couple of hours to spare ( what!) watch the video below. It is all about Evolution vs. Creationism and Intelligent Design. It is a bit deep but fascinating and totally convincing. This guy , Ken Miller ( no atheist he, by the way) is SO good he gets hate mail from creationists, because having seeing this they know they do not have a leg to stand on. One of their arguments is that you never find transitional species in the fossil record.Well in the lecture he talks about how some fossil reptile like mammals and mammal like reptiles are so "transitionary" that they even cause arguments between paleontologists in to which category they should belong! Also note the part about the evolution of the whale from land mammals, he even explains how the ear had adapted to life under water . Great stuff!
2006-12-17 00:01:02
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answer #1
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answered by Anonymous
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Evolution by the accumulation of many small mutations is a little bit like the evolution of a language. It doesn't happen in a generation, and it happen so slowly it is hard to notice. Consider Latin--a common ancestor to French, Italian, Spanish, Portuguese, and more. How did all these languages evolve from the same root? Latin speakers were isolated from each other by geography. Slang words crept into local dialects, one-by-one. Different pronunciations took root in different areas. Given a long enough time, different languages evolved. The equivalent of different biological genera, in this metaphor.
Look at what's happened to English. Modern business English is different enough from the language of Chaucer that people use cheat sheets to understand it. It's different enough from the language of Shakespeare that his plays require a bit of mental work to understand the puns and plays on words. In only a few hundred years (since the 1600s), look at all the different forms of pronunciation, vocabulary, and slang that have developed in former British colonies such as the US, Jamaica, India, and Australia. I've even seen English subtitles on some "English-language" movies to help all viewers understand what's being said. Still English--but perhaps a different "species" or "subspecies" of English from Shakeseare's, in this metaphor. (Television,by the way, may be slowing the development of local language differences, in the same way that the removal of geographic barriers can slow the development of genetically different populations).
We live such a short time on earth, that we don't observe big changes within a few lifetimes (in language or in biological organisms). In the language record, we can find examples of different written languages on clay tablets, lets say, from which more modern languages such as Latin developed. But we can only guess at the vocabulary of the earliest humans. For the lineages of biological organisms, we can look to the fossil record or to DNA matching to deduce the history of change of species--and there is plenty of it.
In human time, we are only able to see some of the small changes that, when added up over time, account for big changes. Certainly we can observe and measure the rapid ability of bacteria and viruses to mutate into forms resistant to medicine. And we have observed the ability of insect populations to develop resistance to insecticides, by favoring the reproduction and survivability of small populations with natural resistance. Too slow to see develop, but easy enough to note: Among modern humans: the genes for tolerance of milk-protein are more common in people whose ancestors herded dairy cattle. The genes for sickle-cell, which help protect against malaria, occur among people whose ancestors lived in malaria-prone regions.
Will the English language, as we know it. still be spoken in a mere 2000 years. Not likely. Will ALL the lines of offspring from today's human populations look like us 10 million years from now, assuming the earth is still habitable? Probably not. Over that long a period of time, it is quite possible that some lines may develop in response to climate change or other pressures that are quite different from one another--maybe even at the species level.
2006-12-17 14:23:59
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answer #2
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answered by luka d 5
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The change was due to evolution because of habituation. There was need for ape to evolve but there is no need any more i guess. Rememeber, that is still a theory... plus it happens over ages anyway, so its probably happening right b4 our eyes
2006-12-17 02:18:25
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answer #3
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answered by Gangsteer 3
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Because there is no such thing as evolution
The Flying Spaghetti Monster made everything
http://www.venganza.org/
2006-12-17 02:21:01
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answer #4
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answered by cheese good 1
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This 'transformation' does not happen in a single generation or right before your eyes, it takes place in many, many small alterations over a time period so very long that you are clearly unable to comprehend it.
2006-12-17 02:16:18
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answer #5
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answered by mensahank 2
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not everyone in science believes that,evolution vs. creation
2006-12-17 03:57:03
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answer #6
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answered by vincent c 4
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Life is all about procreation.
2006-12-17 02:15:16
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answer #7
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answered by Anonymous
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been asked before here:
http://answers.yahoo.com/question/index;_ylt=AksUjwyB5iCytadCIHUTL7nsy6IX?qid=20061208104019AAMKRHQ&show=7#profile-info-2ada2396f0ff6a8f71aded93375bfdb3aa
I like my answer #4 if I do say so myself.
2006-12-17 02:21:44
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answer #8
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answered by me 3
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