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Temperature sex reversal implies sex gene dosage in a reptile

Alexander E Quinn1, Arthur Georges, Stephen D Sarre

  • 1Institute for Applied Ecology, University of Canberra, ACT 2601, Australia. quinn@aerg.canberra.edu.au

Science (New York, N.Y.)
|April 21, 2007
PubMed

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In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
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