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EvC Forum ⇒ Science Forums ⇒ Biological Evolution ⇒

Evolution theory and teratology

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Author Topic:   Evolution theory and teratology
Taq
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Message 8 of 17 (582551)
09-22-2010 1:58 AM 		Reply to: Message 1 by Yrreg
05-21-2008 6:24 PM

Are teratological features of offsprings the changes that are taken to be mutations,
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Actually, there is a difference between teratogens and mutagens. Teratogens cause a dysfunction in embryonic development that is unrelated to DNA sequence. One of the more famous examples is thalidomide. This sedative caused dysfunction in embryonic development that resulted in stunted limb development. Thalidomide did not cause a specific mutation that caused short limbs. It interfered with cell to cell signaling during embryonic development.
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So no, teratological features are not automatically considered to be mutations of DNA sequence.
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Taq
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Posts: 10073
Joined: 03-06-2009
Member Rating: 5.2

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Message 17 of 17 (583053)
09-24-2010 1:13 PM 		Reply to: Message 11 by Yrreg
09-22-2010 7:54 PM

Re: Of course you have got stock answers to all the questions...
What is the natural factor in natural selection?
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The interaction of the organism with its natural environment.
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Is it the blind and purposeless nature that should not care anything about survival of whatever, as to lead to stability of surviving species, in the time span they do survive in?
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Does the finish line care who crosses first?
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It is just a fact that the fittest individuals in a population tend to have the most grandchildren.
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