Description: (Biologist, Zoologist, Geneticist)
August Weismann was a notable German evolutionary biologist recognized for his germ plasm theory, also known as Weismannism. He held the positions of Director of the Zoological Institute and the first Professor of Zoology at Freiburg. Weismann introduced the concept of the Weismann barrier, suggesting that genetic information is transmitted solely through germ cells and not somatic cells. He significantly influenced modern evolutionary thinking by dismissing Lamarckism and highlighting the importance of mutation and natural selection in evolutionary processes.