A Critical Review of Some Recent Work in Sex Determination. I. Fishes

IN MY book on sex intergrades (193 I) I reviewed the facts then known about sex determination in fishes and came to the conclusion that in a general way conditions seemed to be very similar to those in the Amphibia, but that important data were still missing. During the past few years considerable work has been done in this group, which unfortunately, however, has not only not clarified the situation but made it even more obscure. In my opinion this is not the consequence of a special complication of the case, but rather of the complicated way of reasoning of the authors who interpreted the facts. We shall therefore review the facts and try to find out whether they do not after all fit into the general scheme derived from other groups of animals.