<P> August Friedrich Leopold Weismann ( 17 January 1834 -- 5 November 1914 ) was a German evolutionary biologist . Ernst Mayr ranked him as the second most notable evolutionary theorist of the 19th century , after Charles Darwin . Weismann became the Director of the Zoological Institute and the first Professor of Zoology at Freiburg . </P>
<P> August Friedrich Leopold Weismann ( 17 January 1834 -- 5 November 1914 ) was a German evolutionary biologist . Ernst Mayr ranked him as the second most notable evolutionary theorist of the 19th century , after Charles Darwin . Weismann became the Director of the Zoological Institute and the first Professor of Zoology at Freiburg . </P>
who refuted the theory of pangenesis with his classic experiment on mice tails
who refuted the theory of pangenesis with his classic experiment on mice tails
August Friedrich Leopold Weismann
August Friedrich Leopold Weismann