The eighth day of the twelfth lunar month (Kimi), January 17, 1834, the German biologist Weismann was born.

1834 1 17, the German biologist Weismann was born in Frankfurt, Germany. 1892 Weismann germplasm consecutive doctrine distinguish germplasm and physical the first time in the history of biology, and stressed that the stability and continuity of the germplasm for the subsequent establishment of the chromosome theory and the development of the gene theory provide a basic idea, to have a huge impact on the development of biology, genetics.