Question

mention two principle through which lamark explained his idea​

Answer 1

Answer:

The first idea of use and disuse is only the first part of Lamarck’s revolutionary thought. It is referred to as the 'First Law' of his publication, Philosophie Zoologique. . The use or disuse theory explains that the parts of an organism that the organism uses most will undergo hypertrophy and will become more developed. Hypertrophy is the growth of a specific organ or tissue. So by this idea, the more an organism uses a part of its body, the larger and more developed that part will become. The parts of the organism that are not used as much undergo atrophy and begin to degrade from lack of use. This means that the part of the organism will get decrease in size due to the lack of use for that particular part of the organism. This is the beginning of the idea of inheritance of acquired traits.

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