Show key to heredity found B by the busy scientist scientists working wording to solve the mys mysteries of 0 heredity havo have been given a key to many of their problems with the dIs discovery coNery of a giant chromosome in the salt salivary Nary gland aland of the yeast fly says pathfinder magazine some 70 times normal size this thas over sized of cell riou clel brings into clearness the genes told held thereon it 11 Is ili the genes 1 la which the he act eclen mists have the greatest interest since they are the units controlling heredity in long strings on each chromosome a complete set la 14 contained in each cell and there fore the giant chromosome la Is a large scale model of all its smaller brothers in the case en be of the denst fly it Is thought that between af 2000 and genes genea are contained in each cell anti and since the ordinary chromosome Is only 15 one hundred thousandths of an inch long it Is easy to ste sie the minuteness of bah gene there iq 19 now of the existence of genes genea and a few of these have been individually identa fled fach one his has its individual function suh ns as controlling the color of the ekes in tho human or the for mitlon of the black blace speck under the wing of the fly etc |