Lamarck theory used by the man. According to this theory - Evolution is based on the principles that physical changes like greater development of organs or part through increased use could be transmitted to their offspring.
Theory is based on used and disused which is states that when certain organs become specially developed as a result of some environmental need, then that state of development is hereditary and passed from one generation to the other.
The aim of theory is to be boiled down to two broad claims such as - new species evolved from the previous species and acquired traits are inherited by offspring.
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