Gene De-Repression

Abstract
CELL diversity arises out of cell identity. The myriad of cell types composing an individual all result from the successive divisions of an original cell. A uniform content of DNA in each cell nevertheless results in a disparity of types of RNA, proteins, enzymes and antigens. These are some of the themes and paradoxes underlying current research in the control of gene functions in mammals.The issues may be sharply posed. DNA contains the biochemical information specifying the primary structures of such subsidiary molecules as RNA, proteins, enzymes and antigens, and ultimately of the cells and the organism itself. The . . .