The location of the nucleolus organizer regions in Drosophila hydei.

Chromosoma ·Vol. 51 ·No. 1 ·1975-00-00 ·Pages 57-63

Hennig W, Link B, Leoncini O

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.

MeSH Terms

Animals Biological Evolution Cell Nucleolus Cell Nucleus Chromosomes Drosophila Drosophila melanogaster Female Heterochromatin Larva Male Nucleic Acid Hybridization RNA, Ribosomal Sex Chromosomes Species Specificity Spermatozoa Tritium Uridine

Chemicals

Heterochromatin RNA, Ribosomal Tritium Uridine

Authors & Affiliations

3 authors, click to expand affiliations / ORCID

Hennig W

Link B

Leoncini O

References (8)

8 references, click to expand

An analysis of white-mottled mutants in Drosophila hydei, with observations on X-Y exchanges in the male.
Genetica. 1970;41(4):589-625 PMID: 5512359
[Investigations of the structure and function of lampbrush-Y-chromosome in spermatogenesis in Drosophila].
Chromosoma. 1967;22(3):294-357 PMID: 4169560
Ribonucleic acid synthesis of the Y-chromosome of Drosophila hydei.
J Mol Biol. 1968 Dec 14;38(2):227-39 PMID: 5760638
The nucleolus in primary spermatocytes of Drosophila hydei.
Chromosoma. 1974 Jun 11;46(2):121-44 PMID: 4854976
Iso-Alleles at the Bobbed Locus in Drosophila Hydei Populations.
Genetics. 1944 Nov;29(6):520-36 PMID: 17247136
Molecular hybridization of DNA and RNA in situ.
Int Rev Cytol. 1973;36:1-44 PMID: 4128633
A molecular explanation of the bobbed mutants of Drosophila as partial deficiencies of "ribosomal" DNA.
Genetics. 1966 Sep;54(3):819-34 PMID: 5970623
Structure and function of the Y chromosome of Drosophila hydei.
Cold Spring Harb Symp Quant Biol. 1974;38:673-83 PMID: 4524781

Article Info

Journal

Chromosoma

Abbr.

Chromosoma

ISSN

0009-5915

DOI

10.1007/BF00285808

Published

1975-00-00

Pages

57-63

Language

English

Region

Austria

NLM ID

2985138R

Subset

External Links

PubMed source DOI: 10.1007/BF00285808 View journal details

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The location of the nucleolus organizer regions in Drosophila hydei.

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