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Hermaphroditism in a Sprague-Dawley rat

R W Diters1, K A Funk, H Fang

  • 1Bristol-Myers Squibb Company, PO Box 4755, Syracuse, NY 13221, USA. richard.diters@bms.com

Veterinary Pathology
|May 11, 2007
PubMed

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The Ratio of X Chromosome to Autosomes02:45

The Ratio of X Chromosome to Autosomes

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.  
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female Drosophila...