Journal
SCIENCE
Volume 292, Issue 5526, Pages 2479-2482Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1060411
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The dominance of the diploid state in higher organisms, with haploidy generally confined to the gametic phase, has Led to the perception that diploidy is favored by selection. This view is highlighted by the fact that no known female organism within the Metazoa exists exclusively (or even for a prolonged period) in a haploid state. We used fluorescence microscopy and variation at nine microsatellite Loci to show that the false spider mite, Brevipalpus phoenicis, consists of haploid female parthenogens. We show that this reproductive anomaly is caused by infection by an undescribed endosymbiotic bacterium, which results in feminization of haploid genetic males.
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