Structural differences between XX and ZW sex lampbrush chromosomes in Rana rugosa females (Anura: Ranidae)

Ikuo Miura, Hiromi Ohtani, Akihiko Kashiwagi, Hideki Hanada, Masahisa Nakamura

研究成果: Article

29 引用 (Scopus)

抄録

In this study we investigated the morphology and pairing behavior of sex lampbrush chromosomes of XX and ZW females of Rana rugosa from five localities in Japan. Whereas lampbrush chromosomes of XX females from Hiroshima and Isehara had subterminally located centromeres and showed remarkable similarity, those of XX females from Hamakita had the centromeres in the middle. Analysis of landmark configurations revealed that chromosome Xq of Hamakita females closely resembled a part of Xq of Hiroshima and Isehara females, whereas Xp of Hamakita females was inverted compared with the other part of Xq of Hiroshima and Isehara females. Z chromosomes from Kanazawa and Niigata closely resembled the Hiroshima X, whereas the W closely resembled the Hamakita X. XX pairings from Hiroshima, Isehara, and Hamakita were found to be joined by one to four chiasmata at various points all along the axis in both the short and long arms, whereas chromosomal pairs from Kanazawa and Niigata showed only one chiasma between Zp and the distal region of Wq. From these findings we conclude that (1) both the W and the Hamakita X must have evolved from the more primitive Hiroshima and Isehara X chromosomes by a series of pericentric inversions; and (2) females distributed in Hamakita possess two X chromosomes similar to the W, suggesting that either sex-determining or sex-modifying genes on the Hamakita X are clearly different from those on the Kanazawa and Niigata W chromosome.

元の言語English
ページ(範囲)237-241
ページ数5
ジャーナルChromosoma
105
発行部数4
DOI
出版物ステータスPublished - 1996
外部発表Yes

Fingerprint

Ranidae
Sex Chromosomes
Anura
Chromosomes
Centromere
X Chromosome
Japan

ASJC Scopus subject areas

  • Genetics

これを引用

Structural differences between XX and ZW sex lampbrush chromosomes in Rana rugosa females (Anura : Ranidae). / Miura, Ikuo; Ohtani, Hiromi; Kashiwagi, Akihiko; Hanada, Hideki; Nakamura, Masahisa.

:: Chromosoma, 巻 105, 番号 4, 1996, p. 237-241.

研究成果: Article

Miura, I, Ohtani, H, Kashiwagi, A, Hanada, H & Nakamura, M 1996, 'Structural differences between XX and ZW sex lampbrush chromosomes in Rana rugosa females (Anura: Ranidae)', Chromosoma, 巻. 105, 番号 4, pp. 237-241. https://doi.org/10.1007/s004120050180
Miura, Ikuo ; Ohtani, Hiromi ; Kashiwagi, Akihiko ; Hanada, Hideki ; Nakamura, Masahisa. / Structural differences between XX and ZW sex lampbrush chromosomes in Rana rugosa females (Anura : Ranidae). :: Chromosoma. 1996 ; 巻 105, 番号 4. pp. 237-241.
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