Evolution: postponing extinction by polyandry.
Sex-ratio meiotic drive occurs when males produce a predominance of X-chromosome bearing sperm and an inordinate number of daughters. A driving X causes highly female-biased sex ratios and the risk of extinction. Polyandry can rescue a population from extinction.
Wade
Michael J
MJ
Department of Biology, Indiana University, Bloomington, IN 47401, USA. mjwade@indiana.edu <mjwade@indiana.edu>
D000818:Animals; D004330:Drosophila / Q000235:genetics* / Q000502:physiology*; D053476:Extinction, Biological; D005260:Female; D008297:Male; D012744:Sex Ratio; D012726:Sexual Behavior, Animal / Q000502:physiology*; D014960:X Chromosome; D014998:Y Chromosome