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Neural correlates of genetically determined and acquired color preferences in quail chicks

P Kabai1, J Kovach, C Vadasz

  • 1Research Department, Menninger Clinic, Topeka, KS 66601.

Brain Research
|February 28, 1992
PubMed

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Frequency-dependent Selection

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Position-effect Variegation

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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