The location of the nucleolus organizer regions in Drosophila hydei

Hennig, W; Link, B; Leoncini, O

doi:10.1007/BF00285808

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The location of the nucleolus organizer regions in Drosophila hydei

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Hennig, W
Hennig Group, Friedrich Miescher Laboratory, Max Planck Society;

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Link, B
Hennig Group, Friedrich Miescher Laboratory, Max Planck Society;

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Citation

Hennig, W., Link, B., & Leoncini, O. (1975). The location of the nucleolus organizer regions in Drosophila hydei. Chromosoma: Biology of the Nucleus, 51(1), 57-63. doi:10.1007/BF00285808.

Cite as: https://hdl.handle.net/21.11116/0000-000C-80EC-9

Abstract

The positions of the nucleolus organizer regions in metaphase chromosomes of Drosophila hydei were detected by in situ hybridization experiments. In agreement with earlier conclusions the nucleolus of the X chromosome was found to originate in a terminal region of the heterochromatic arm. The Y chromosome contains two nucleolus organizers, one in a terminal postion of the long arm, and the other in the short arm. The implications with respect to the evolution of the Y chromosome are discussed.