The intracellular location of the adenine- and thymine-rich component of deoxyribonucleate in testicular cells of the crab, Cancer productus

Nobel lecture. Synthetic DNA and biology

“Most of the significant work has been summarized in a number of reviews and articles. In these there was, of necessity, a good deal of simplification and omission of detail …. With the passage of time, even 1 find myself accepting such simplified accounts.”

Is Drosophila dAT on the Y chromosome?

DNA isolated from Drosophila melanogaster embryos contains measurable amounts of dAT, the copolymer of deoxyadenylate and deoxythymidylate. In wild-type (XX,XY) embryos, dAT constitutes 4% of the total DNA. In embryos containing extra Y chromosomes, or even extra portions of Y chromosomes, dAT constitutes as much as 7% of the total. The enrichment for dAT is dependent upon the number of extra short arms of the Y chromosome (Y(S)) or long arms (Y(L)) of the Y chromosome per individual. This enrichment of dAT dependent on the Y chromosome may be interpreted in several ways. The most straightforward interpretation is that dAT is present in high concentrations on the Y chromosome.