According to Lamarck's theory, this situation is due to the inheritance of acquired traits as a result the son has larger muscles than his father had at the same age.
Lamarckism, a principle of evolution primarily based on the precept that bodily modifications in organisms throughout their lifetime along with more improvement of an organ or a component via increased use might be transmitted to their offspring.
Therefore, According to Lamarck's theory, this situation is due to the inheritance of acquired traits as a result the son has larger muscles than his father had at the same age.
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