KOMPAS.com – Evolution theory Lamar is one of evolution theory which seeks to uncover the secrets of the evolution of living things. Lamarck’s theory could not last long because it had a weakness.
Lamarck’s theory of evolution proposed by a French naturalist and biologist named Jean-Baptise Lamarck.
In his book Philosophie zoologique, Lamarck argues that evolution occurs due to internal drives within living things and these changes are passed down to the next generation.
The change in living things is to increase the size and function that is superior in life. Lamarck’s theory of evolution is not generally accepted because it has weaknesses. Here are the drawbacks Lamarck’s theory of evolution!
Also read: Evolution: Definition and Development
Have no proof
Basically Lamarck’s theory of evolution is a concept that has no evidence. Lamarck did not have scientific evidence to support his theory, so this theory was widely criticized.
Evolution is not always an increase in size
Reported from Online Biology Notes, Lamarck related evolution as the tendency of certain groups of organisms to change and increase in size. However, the available evidence suggests that evolution did not go that way.
Evolution doesn’t always increase in size
Evolution does not always increase the size of living things, but also reduces their size. For example, many ancient plants and animals were large but evolved to be smaller.
For example, ancient ferns were once giant in size, now shrinking smaller after evolving.
Also read: Evolution and Its Various Theories
Contradictions with August Weisman
Lamarck viewed evolution in a simple way, where changes occur as a result of the body parts used. For example, a giraffe tries to get food on tall trees, so its neck slowly lengthens.
Lamarck assumes the change was directly passed on to the next offspring of the giraffe. This was opposed by a German biologist named August Friedrich Leopold Weismann.
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