Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleMale or Female? The Answer Depends on When You Ask.AuthorsHelen K. SalzAbstractOver 80 years ago, Bridges came to the conclusion that sex inDrosophila is determined by the X:A ratio. Doubts about this hypothesis are raised by taking a molecular look at how--and when--sex is determined.SubjectsGENETIC sex determination; SEX chromosomes; Y chromosome; X chromosome; SEX (Biology); EMBRYOLOGYPublicationPLoS Biology, 2007, Vol 5, Issue 12, pe335ISSN1544-9173Publication typeArticleDOI10.1371/journal.pbio.0050335