M chromosome of the wild silkworm, Bombyx mandarina (n = 27), corresponds to two chromosomes in the domesticated silkworm, Bombyx mori (n = 28)

Yutaka Banno, Takashi Nakamura, Eiichi Nagashima, Hiroshi Fujii, Hiroshi Doira

研究成果: ジャーナルへの寄稿記事

21 引用 (Scopus)

抄録

Chromosomes of Bombyx mori (n = 28) and of Bombyx mandarina (n = 27) were studied cytogenetically to resolve the origin of the large M chromosome in the Japaneses type of B. mandarina. In the F1 progeny from the reciprocal cross between B. mandarina and B. mori, the mitotic chromosome number was 2n = 55, and a chromosome configuration of 26 bivalents plus 1 trivalent was observed at metaphase I of germ cells. The trivalent chromosome consisted of the M chromosome from B. mandarina and two chromosomes from B. mori. When males of B. mori were mated to the F1 females, nuclei with two types of chromosome number (2n = 55 and 2n = 56) and two sets of chromosome pairs (26 bivalents plus 1 trivalent versus 28 bivalents) were observed in the metaphase I stage. Linkage analysis showed that the 14th chromosome of B. mori was involved in these two types of chromosome segregation. This result indicates that the M chromosome in B. mandarina arose from a fusion between a chromosome corresponding to the 14th linkage group and another, yet unidentified linkage group.

元の言語英語
ページ(範囲)96-101
ページ数6
ジャーナルGenome
47
発行部数1
DOI
出版物ステータス出版済み - 2 1 2004

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Bombyx
Chromosomes
Chromosomes, Human, 4-5
Morus
Metaphase
Chromosome Segregation
Germ Cells

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Molecular Biology
  • Genetics

これを引用

M chromosome of the wild silkworm, Bombyx mandarina (n = 27), corresponds to two chromosomes in the domesticated silkworm, Bombyx mori (n = 28). / Banno, Yutaka; Nakamura, Takashi; Nagashima, Eiichi; Fujii, Hiroshi; Doira, Hiroshi.

:: Genome, 巻 47, 番号 1, 01.02.2004, p. 96-101.

研究成果: ジャーナルへの寄稿記事

Banno, Yutaka ; Nakamura, Takashi ; Nagashima, Eiichi ; Fujii, Hiroshi ; Doira, Hiroshi. / M chromosome of the wild silkworm, Bombyx mandarina (n = 27), corresponds to two chromosomes in the domesticated silkworm, Bombyx mori (n = 28). :: Genome. 2004 ; 巻 47, 番号 1. pp. 96-101.
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abstract = "Chromosomes of Bombyx mori (n = 28) and of Bombyx mandarina (n = 27) were studied cytogenetically to resolve the origin of the large M chromosome in the Japaneses type of B. mandarina. In the F1 progeny from the reciprocal cross between B. mandarina and B. mori, the mitotic chromosome number was 2n = 55, and a chromosome configuration of 26 bivalents plus 1 trivalent was observed at metaphase I of germ cells. The trivalent chromosome consisted of the M chromosome from B. mandarina and two chromosomes from B. mori. When males of B. mori were mated to the F1 females, nuclei with two types of chromosome number (2n = 55 and 2n = 56) and two sets of chromosome pairs (26 bivalents plus 1 trivalent versus 28 bivalents) were observed in the metaphase I stage. Linkage analysis showed that the 14th chromosome of B. mori was involved in these two types of chromosome segregation. This result indicates that the M chromosome in B. mandarina arose from a fusion between a chromosome corresponding to the 14th linkage group and another, yet unidentified linkage group.",
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AU - Doira, Hiroshi

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