What examples you will give to prove that Lamarckism is not correct?
Answers
Answer:
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Explanation:
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Answer:
"In Lamarck's time, the acquired characters of inheritance was accepted but later Mendel's law of inheritance ruled it out. "
Explanation:
"In Lamarck's time, the acquired characters of inheritance was accepted but later Mendel's law of inheritance ruled it out. "
Explanation:
The “first theory of evolution” was proposed by Lamarck , states that the “Organisms undergo changes for adapting themselves to the environment and characters” those get passed on to the next generation.
Main characteristics of his theory were:
1. INTERNAL VITAL FORCE - It will change the size and form of organism.
2. ENVIRONMENT- Changes in the environment will bring changes in the organisms.
3. NEW NEEDS – It produces modifications in the body and formation of new organs.
4. USE AND DISUSE OF ORGANS - Persistent use of an organ will make it more efficient and disuse causes degeneration
5. INHERITANCE OF ACQUIRED CHARACTERS - Traits acquired by this processes will get passed into the next generation.
For instance: Long neck and high fore limbs of giraffe, webbed feet of aquatic birds, snakes will lost their limbs due to creeping in narrow holes etc.
Criticisms on his theory was
1. Internal vital force is untrue.
2. Desires was wrong because we cannot sprout wings just by wishing to fly
3. Mutilations are not inherited.
4. In Lamarck's time, the acquired characters of inheritance was accepted but later Mendel's law of inheritance ruled it out.
However, the credit must be given to Lamarck for his “vision of evolution” for explaining the fossil record, current diversity of life, great age of earth and the stress on adaptations as primary product of evolution.