title: Estimation of preferential pairing rates in second-generation autotetraploid pacific oysters (Crassostrea gigas).
abstract: Although previously disregarded, polyploidy, and in particular autopolyploidy, is now believed to have played a prominent role in the evolution of plants and animals. We estimated the rate of preferential pairing in second-generation autotetraploid Pacific oysters from gametic frequencies. We found significant levels of preferential pairing in these recently generated autopolyploids, suggesting that genetic variation in standing populations may play a role in meiotic mechanisms of polyploids derived from these populations.
authors.affiliation: Department of Marine Environmental Biology, University of Southern California, Los Angeles, 90089, USA. jcurole@usc.edu
authors.forename: Jason P
authors.initials: JP
authors.lastname: Curole
authors.forename: Dennis
authors.initials: D
authors.lastname: Hedgecock
mesh_terms: D000818:Animals; D005075:Biological Evolution; D003433:Crosses, Genetic; D005260:Female; D005787:Gene Frequency; D014644:Genetic Variation; D008297:Male; D008540:Meiosis / Q000502:physiology*; D018895:Microsatellite Repeats / Q000235:genetics; D008957:Models, Genetic; D010125:Ostreidae / Q000235:genetics* / Q000502:physiology; D011123:Polyploidy; D012737:Sex Factors; D012726:Sexual Behavior, Animal / Q000502:physiology*