How was the lamarckism theory disapproved?
Albert01:
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my answer
You wrote what was proved wrong...not how it was proved wrong...
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Hello friend,
Lamarck thought that characteristics gained by an organism during its life could be passed on to its offspring. For example, he thought if you started out scrawny but lifted weights diligently, you could pass on your newly acquired muscularity to your kids.
It would be nice, wouldn't it?
Unfortunately, we now know that this is impossible - Lamarck's theory is disproven by the mechanism of heredity. We now know that DNA is responsible for heredity and we know an immense amount about how this occurs. Lamarck's theory would require that characteristics acquired during life directly alter DNA - and that is impossible! When you work out and subsequently build muscle, it does not alter the DNA of your gametes at all. The only way DNA could be changed (historically) was by chance mutations.
Lamarck thought that characteristics gained by an organism during its life could be passed on to its offspring. For example, he thought if you started out scrawny but lifted weights diligently, you could pass on your newly acquired muscularity to your kids.
It would be nice, wouldn't it?
Unfortunately, we now know that this is impossible - Lamarck's theory is disproven by the mechanism of heredity. We now know that DNA is responsible for heredity and we know an immense amount about how this occurs. Lamarck's theory would require that characteristics acquired during life directly alter DNA - and that is impossible! When you work out and subsequently build muscle, it does not alter the DNA of your gametes at all. The only way DNA could be changed (historically) was by chance mutations.
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