EVERYDAY SCIENCE

Detailed explanation-1: -August Weismann’s 1892 germ plasm theory. The hereditary material, the germ plasm, is transmitted only by the gonads. Somatic cells (of the body) develop afresh in each generation from the germ plasm. August Weismann proposed the germ plasm theory in the 19th century, before the foundation of modern genetics.

Detailed explanation-2: -germ-plasm theory, concept of the physical basis of heredity expressed by the 19th-century biologist August Weismann (q.v.).

Detailed explanation-3: -August Weismann (1834-1914) was a German evolutionary biologist who proposed a theory of the germ plasm, a precursor to DNA theory. The germ plasm theory suggests that acquired characteristics cannot be inherited.

Detailed explanation-4: -The term germplasm was first utilized by the German scholar, August Weismann and then the continuity of germplasm theory was given by Weismann only. He portrayed the germplasm theory in his 1892 book Theorie der Vererbung.