It was at the end of the 19th century that a Swiss biologist, Karl Nageli first proposed the existence of hereditary organelles that carried information from parent to offspring. Ensuing decades experienced vigorous studies that led to the development of discovery that chromosomes are indeed the carriers of genetic information. Subsequent studies, especially by Morgan and Bridges, established unequivocally the chromosome theory of inheritance. Today, the structure of chromosome is well established. At the physical level, eukaryotic chromosomes are composed of a single, linear, double helix of...
It was at the end of the 19th century that a Swiss biologist, Karl Nageli first proposed the existence of hereditary organelles that carried informati...
This year we remember the 39th anniversary of the atomic bomb explo sions in Hiroshima and Nagasaki, which led to the exposure of thou sands of people to high doses of ionizing radiations. Nearly 18 years earlier, on the 15th of September, 1927, H. J. Muller presented his paper The Problem of Genic Modification at the Fifth International Congress of Genetics in Berlin, in which he brilliantly demonstrated the muta genic activity of X-rays. In 1928, K. H. Bauer formulated his mutation theory of the origin of cancer, and already in 1914, Th. Boveri speculat ed that tumor cells originate from an...
This year we remember the 39th anniversary of the atomic bomb explo sions in Hiroshima and Nagasaki, which led to the exposure of thou sands of people...
