Amami Islands

Novel sex-determination mechanism revealed in mammals

Retrieved on: 
Monday, November 28, 2022
Zaysan, National academy, Mammal, Science, Hokkaido University, Chromosome, DNA, Female, Male, Mouse, Research, Element, Gene expression, XY, RATS, Antibiotics, SOX9, Factor X, Amami Islands

SAPPORO, Japan, Nov. 28, 2022 /PRNewswire/ -- In mammals, the distinction between male and female at the chromosomal level is due to the X and Y chromosomes. Typically, females have two X chromosomes (XX) while males have an X and a Y chromosome (XY). The Sry gene on the Y chromosome triggers the formation of the testes. However, there exist a handful of rodent species in which the Y chromosome has disappeared, taking with it the Sry gene. The mechanism by which testes development occurs in these species is not fully understood, and is subject to much research.

Key Points: 
  • In the Amami spiny rat, the the Sry gene is completely absent; thus, it has evolved a novel, unknown sex-determining mechanism independent of Sry.
  • This study is the first discovery of a male-specific genetic element directly related to sex-determining mechanism in mammals that is independent of Sry.
  • It shows that the the sex-determination mechanism in the Amami spiny rat has moved to chromosome 3, an autosome the first example of a translocation of sex-determination mechanism in mammals.
  • Future work will focus on investigating the exact mechanism by which Enh14 acts, as well as identifying other elements of this novel mechanism.

Novel sex-determination mechanism revealed in mammals

Retrieved on: 
Monday, November 28, 2022
Zaysan, National academy, Mammal, Science, Hokkaido University, Chromosome, DNA, Female, Male, Mouse, Research, Element, Gene expression, XY, RATS, Antibiotics, SOX9, Factor X, Amami Islands

SAPPORO, Japan, Nov. 28, 2022 /PRNewswire/ -- In mammals, the distinction between male and female at the chromosomal level is due to the X and Y chromosomes. Typically, females have two X chromosomes (XX) while males have an X and a Y chromosome (XY). The Sry gene on the Y chromosome triggers the formation of the testes. However, there exist a handful of rodent species in which the Y chromosome has disappeared, taking with it the Sry gene. The mechanism by which testes development occurs in these species is not fully understood, and is subject to much research.

Key Points: 
  • In the Amami spiny rat, the the Sry gene is completely absent; thus, it has evolved a novel, unknown sex-determining mechanism independent of Sry.
  • This study is the first discovery of a male-specific genetic element directly related to sex-determining mechanism in mammals that is independent of Sry.
  • It shows that the the sex-determination mechanism in the Amami spiny rat has moved to chromosome 3, an autosome the first example of a translocation of sex-determination mechanism in mammals.
  • Future work will focus on investigating the exact mechanism by which Enh14 acts, as well as identifying other elements of this novel mechanism.

New Artwork by GOTO Akinori, Filled with Hopes of Shuri Castle Reconstruction, Will Be Exhibited at Naha Airport Starting Saturday, February 29

Retrieved on: 
Friday, February 28, 2020
Transportation, Destinations, Travel, Public relations, Investor relations, Marketing, Arts, Museums, Events, Concerts, Entertainment, Air, Communications, Transport, Ryukyu Islands, Kyushu region, Subdivisions of Japan, Historic Sites of Japan, Naha, Military of Ryukyu, Fictional characters, Gusuku, Shuri Castle, Okinawa Island, Shuri, Amami Islands

Ancient gusuku, or castle remains, can be found all around Okinawa, from the Amami Islands to Yaeyama Islands.

Key Points: 
  • Ancient gusuku, or castle remains, can be found all around Okinawa, from the Amami Islands to Yaeyama Islands.
  • In this piece, GOTO seeks to convey the life energy with which Okinawa hums, creating this project full of hopes for the reconstruction of Shuri Castle.
  • While Shuri Castle was originally built to protect Suimuiutaki, the two have come to be regarded as one and the same.
  • Shuri Castle has burned in the past, and every time it has been rebuilt based on the attention and wishes of people.

"Honkaku Shochu and Awamori" Liquors Showcased at Exhibition

Retrieved on: 
Tuesday, March 26, 2019
Shōchū, Food and drink, Japanese cuisine, Awamori, Rice wine, Japanese culture, Sake, Liquor, Amami Islands

); differences between honkaku shochu and awamori and other distilled liquors from other countries (e.g.

Key Points: 
  • ); differences between honkaku shochu and awamori and other distilled liquors from other countries (e.g.
  • The Japan Sake and Shochu Makers Association is a liquor industry association with members consisting of makers of the national liquors of Japan, including sake, honkaku shochu and awamori.
  • Iki Shochu, Kuma Shochu and Ryukyu Awamori are specific GI products of honkaku shochu and awamori.
  • It applies to Hakata Shochu, Oita Mugi Shochu, Miyazaki Honaku Shochu and Amami Kokuto Shochu.