title: Evolutionary biology: the origins of two sexes.
abstract: Evidence is accumulating that in the green algae the evolution of female and male gametes differing in size--anisogamy--involves genes linked to the mating-type locus, as was predicted theoretically.
authors.affiliation: Institute of Evolutionary Biology, University of Edinburgh, Ashworth Lab. King's Buildings, W. Mains Road, Edinburgh EH9 3JT, UK. deborah.charlesworth@ed.ac.uk
authors.forename: Deborah
authors.initials: D
authors.lastname: Charlesworth
authors.forename: Brian
authors.initials: B
authors.lastname: Charlesworth
mesh_terms: D000818:Animals; D005075:Biological Evolution; D005260:Female; D008297:Male; D012737:Sex Factors; D012726:Sexual Behavior, Animal