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2 Y Genes Can Replace the Entire Y Chromosome for Assisted Reproduction in Mice

Published: November 21, 2013.
Released by University of Hawaii at Manoa  

The Y chromosome is a symbol of maleness, present only in males and encoding genes important for male reproduction. But live mouse offspring can be generated with assisted reproduction using germ cells from males with the Y chromosome contribution limited to only two genes: the testis determinant factor Sry and the spermatogonial proliferation factor Eif2s3y.

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More news from University of Hawaii at Manoa

Comet Wild 2: A Window into the Birth of the Solar System?
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UH-led Team Successfully Observes the Solar Eclipse over the Arctic
The international Solar Wind Sherpas team, led by Dr. Shadia Habbal of the University of Hawaii at Manoa Institute for Astronomy, braved Arctic weather to successfully observe the total solar eclipse of March 20 from Longyearbyen on the island of Spitsbergen in the Svalbard archipelago east of northern Greenland. Their preliminary results are being presented Thursday at the Triennial Earth-Sun Summit in Indianapolis, IN.

Robotically Discovering Earth's Nearest Neighbors
A team of astronomers using ground-based telescopes in Hawaii, California, and Arizona recently discovered a planetary system orbiting a nearby star that is only 54 light-years away. All three planets orbit their star at a distance closer than Mercury orbits the sun, completing their orbits in just 5, 15, and 24 days.

Dive Discovers Missing Aircraft Hangar of Sunken WW II-era Japanese Submarine
The dramatic discovery of a lost World War II-era Imperial Japanese Navy mega-submarine by a University of Hawai'i and U.S. National Oceanic and Atmospheric Administration (NOAA) team in December 2013 inspired a new search by NHK, the Japanese Broadcasting Corporation, to find key missing pieces of the battleship.

A Cold Cosmic Mystery Solved
In 2004, astronomers examining a map of the radiation leftover from the Big Bang (the cosmic microwave background, or CMB) discovered the Cold Spot, a larger-than-expected unusually cold area of the sky. The physics surrounding the Big Bang theory predicts warmer and cooler spots of various sizes in the infant universe, but a spot this large and this cold was unexpected.

Ocean-scale Dataset Allows Broad View of Human Influence on Pacific Coral Reef Ecosystems
As man-made threats to coral reefs mount and interest in conserving reef ecosystems grows, scientists have turned to studying extremely remote and uninhabited reefs in an effort to understand what coral reefs would be like in the absence of humans. A number of islands and atolls in the Pacific Ocean remain virtually untouched by human influence, situated hundreds of kilometers from the nearest human populations.

New Research Predicts a Doubling of Coastal Erosion by Mid-century in Hawai'i
Chronic erosion dominates the sandy beaches of Hawai'i, causing beach loss as it damages homes, infrastructure, and critical habitat. Researchers have long understood that global sea level rise will affect the rate of coastal erosion. However, new research from scientists at the University of Hawaii - M?noa (UHM) and the Hawai'i Department of Land and Natural Resources brings into clearer focus just how dramatically Hawai'i beaches might change.

New Research Finds Oceanic Microbes Behave in a Synchrony Across Ocean Basins
Researchers from the University of Hawai'i - M?noa (UHM) and colleagues found that microbial communities in different regions of the Pacific Ocean displayed strikingly similar daily rhythms in their metabolism despite inhabiting extremely different habitats - the nutrient-rich waters off California and the nutrient-poor waters north of Hawai'i. Furthermore, in each location, the dominant photoautotrophs - light-loving bacteria that need solar energy to help them photosynthesize food from inorganic substances - appear to initiate a cascade effect wherein the other major groups of…

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