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A novel family of repetitive DNA sequences amplified site-specifically on the W chromosomes in Neognathous birds.

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Title: A novel family of repetitive DNA sequences amplified site-specifically on the W chromosomes in Neognathous birds.
Authors: Yamada, Kazuhiko Browse this author
Nishida-Umehara, Chizuko Browse this author →KAKEN DB
Ishijima, Junko Browse this author
Murakami, Takahiro Browse this author
Shibusawa, Mami Browse this author
Tsuchiya, Kimiyuki Browse this author
Tsudzuki, Masaoki Browse this author
Matsuda, Yoichi Browse this author
Keywords: Coturnix japonica
Neognathous birds
Numida meleagris
repetitive DNA
W chromosome
Issue Date: Sep-2006
Publisher: Springer
Journal Title: Chromosome Research
Volume: 14
Issue: 6
Start Page: 613
End Page: 627
Publisher DOI: 10.1007/s10577-006-1071-4
PMID: 16964568
Abstract: A novel family of repetitive DNA sequences was molecularly cloned from ApaI-digested genomic DNA of two Galliformes species, Japanese quail (Coturnix japonica) and guinea fowl (Numida meleagris), and characterized by chromosome in-situ hybridization and filter hybridization. Both the repeated sequence elements produced intensely painted signals on the W chromosomes, whereas they weakly hybridized to whole chromosomal regions as interspersed-type repetitive sequences. The repeated elements of the two species had high similarity of nucleotide sequences, and cross-hybridized to chromosomes of two other Galliformes species, chicken (Gallus gallus) and blue-breasted quail (Coturnix chinensis). The nucleotide sequences were conserved in three other orders of Neognathous birds, the Strigiformes, Gruiformes and Falconiformes, but not in Palaeognathous birds, the Struthioniformes and Tinamiformes, indicating that the repeated sequence elements were amplified on the W chromosomes in the lineage of Neognathous birds after the common ancestor diverged into the Palaeognathae and Neognathae. They are components of the W heterochromatin in Neognathous birds, and a good molecular cytogenetic marker for estimating the phylogenetic relationships and for clarifying the origin of the sex chromosome heterochromatin and the process of sex chromosome differentiation in birds.
Rights: The original publication is available at
Type: article (author version)
Appears in Collections:創成研究機構 (Creative Research Institution) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 松田 洋一

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