Evolution of a multiple sex-chromosome system by three-sequential translocations among potential sex-chromosomes in the taiwanese frog odorrana swinhoana

Ikuo Miura*, Foyez Shams, Si Min Lin, Marcelo de Bello Cioffi, Thomas Liehr, Ahmed Al-Rikabi, Chiao Kuwana, Kornsorn Srikulnath, Yuya Higaki, Tariq Ezaz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Translocation between sex-chromosomes and autosomes generates multiple sex-chromosome systems. It happens unexpectedly, and therefore, the evolutionary meaning is not clear. The current study shows a multiple sex chromosome system comprising three different chromosome pairs in a Taiwanese brown frog (Odorrana swinhoana). The male-specific three translocations cre-ated a system of six sex-chromosomes, X1Y1X2Y2X3Y3-X1X1X2X2X3X3. It is unique in that the translocations occurred among three out of the six members of potential sex-determining chromosomes, which are known to be involved in sex-chromosome turnover in frogs, and the two out of three include orthologs of the sex-determining genes in mammals, birds and fishes. This rare case suggests sex-specific, nonrandom translocations and thus provides a new viewpoint for the evolutionary meaning of the multiple sex chromosome system.

Original languageEnglish
Article number661
Pages (from-to)1-10
Number of pages10
JournalCells
Volume10
Issue number3
DOIs
Publication statusPublished - 2021 Mar

Keywords

  • Autosome
  • Fusion
  • Hexavalent
  • Sex-chromosome turnover

ASJC Scopus subject areas

  • Medicine(all)

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