title: Sex ratios.
abstract: Sex ratio theory attempts to explain variation at all levels (species, population, individual, brood) in the proportion of offspring that are male (the sex ratio). In many cases this work has been extremely successful, providing qualitative and even quantitative explanations of sex ratio variation. However, this is not always the situation, and one of the greatest remaining problems is explaining broad taxonomic patterns. Specifically, why do different organisms show so much variation in the amount and precision with which they adjust their offspring sex ratios?
authors.affiliation: Institute of Cell, Animal and Population Biology, University of Edinburgh, West Mains Road, Edinburgh EH9 3JT, UK. stu.west@ed.ac.uk
authors.forename: S A
authors.initials: SA
authors.lastname: West
authors.forename: S E
authors.initials: SE
authors.lastname: Reece
authors.forename: B C
authors.initials: BC
authors.lastname: Sheldon
mesh_terms: D000818:Animals; D001717:Birds / Q000235:genetics; D005260:Female; D008297:Male; D010961:Plasmodium / Q000235:genetics; D012641:Selection, Genetic; D019849:Sex Determination Processes; D012744:Sex Ratio; D014863:Wasps / Q000235:genetics