Show key to heredity found by the busy scientist scientists working to solve the mysteries of here heredity have been given a key to many of their problems with the discovery of a giant chromosome in the salivary gland of the yeast fly says pathfinder magazine some 70 times normal size this oversized over sized model of celt cell brings into identifiable clearness the genes held thereon it Is the genes in which the scientists have the greatest interest since they are the units controlling heredity arranged in long Iong strings on each chromosome a complete set get la 19 contained in each cell and therefore the giant chromosome Is a large scale model of all its smaller brothers in the case of the yeast fly it Is thought that between 2000 and genes are contained in each cell and since the ordinary chromosome Is only 15 one hundred thousandths of an inch ion long it Is easy to see the minuteness of if each gene there Is now proof of the existence of COO genes and a few of these have been individually identified each one has its individual function such as controlling the color of the eyes in the human or the formation of the black speck under the win wing of the fly etc |