title: Oogamy: inventing the sexes.
abstract: The male-female dichotomy has evolved independently in nearly all lineages of multicellular organisms. Why this should be the case is still uncertain, but recent studies of mating-type genes in green algae open a promising new way to explore molecular-genetic aspects of the evolution of dichotomous sexes.
authors.affiliation: Department of Biology, Campus Box 1229, Washington University, St. Louis, Missouri 63130, USA. kirk@biology.wustl.edu
authors.forename: David L
authors.initials: DL
authors.lastname: Kirk
mesh_terms: D020418:Algal Proteins / Q000235:genetics* / Q000502:physiology; D000818:Animals; D050976:Basic-Leucine Zipper Transcription Factors / Q000235:genetics / Q000502:physiology; D005075:Biological Evolution; D016825:Chlamydomonas reinhardtii / Q000145:classification / Q000235:genetics / Q000502:physiology*; D005796:Genes; D010802:Phylogeny; D016133:Polymerase Chain Reaction; D017434:Protein Structure, Tertiary; D012098:Reproduction / Q000235:genetics; D044446:Volvox / Q000145:classification / Q000235:genetics / Q000502:physiology*
chemical_list: D020418:Algal Proteins; D050976:Basic-Leucine Zipper Transcription Factors