short note on lamarckism
Answers
Answer:
Lamarckism is the hypothesis that an organism can pass on characteristics that it has acquired during its lifetime to its offspring. It is also known as the inheritance of acquired characteristics or soft inheritance
Explanation:
Jean-Baptiste Lamarck proposed that morphological changes occurring in living organisms are responsible for evolution and the reason behind those morphological changes is activities or laziness of that organism. He called this concept as principle of ‘use or disuse of organs’.
He said that the neck of giraffe has become too long due to browsing on leaves of tall plants by extending their neck for several generations; similarly, shoulders of the ironsmith have become very strong due to frequent hammering movements.
Development of organs due to specific activities or their degeneration due to no use at all was widely accepted but transfer of those characters from generation to generation was rejected. Because it had been verified many times that modifications brought in us are not transferred to next generation and thereby Lamarck’s theory was disproved.
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