The inheritance of variations was explained through the theory of pangenesis by Charles Darwin
According to the theory of pangenesis, the miniature version of the body organs called ‘pangenes’ entered into the gonads through blood circulation and resulted in the formation of gametes that were passed on to the next generation.
The theory of pangenesis was rejected by Galton and other evolutionists.
Hence, the theory of pangenesis was proposed by Charles Darwin.