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A gynandromorph of Xylocopa nigrocincta Smith (Hymenoptera: Apidae)

Mariano Lucia1, Alberto H Abrahamovich, Leopoldo J Alvarez

  • 1División Entomología, Museo de La Plata, Univ. Nac. de La Plata, La Plata, Argentina. mlucia@fcnym.unlp.edu.ar

Neotropical Entomology
|April 7, 2009
PubMed

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In most organisms, sex is determined by the ratio of X and Y chromosomes. However, in some organisms, such as Drosophila and C.elegans, sex is determined by the ratio of the number of X chromosomes to the number of sets of autosomes. The Y chromosome in Drosophila is active but does not determine sex. It contains genes responsible for the production of sperms in adult flies.  
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