Nature has evolved clever ways to prevent animals from different species from successfully reproducing. As published in the upcoming issue of Genes & Development, molecular biologists at UC Irvine are gaining a better understanding as to how.
In the October 15th issue, Drs. Noriko Kamei and Charles Glabe report on the identification of a receptor on the surface of sea urchin eggs that regulates the species-specific adhesion of sperm.
External fertilization can be risky business, especially for marine animals whose sperm is released into an aqueous environment. Thus, there are several barriers to prevent cross-fertilization between different species of sea urchins, or even, say, sea horse sperm from fertilizing sea urchin eggs. The recognition of egg and sperm involves a number of steps (sperm attraction, activation, and adhesion to the egg surface), each of which serves as a checkpoint to restrict the gene pool to individuals of the same species.
Heather Cosel | EurekAlert!
Microscope measures muscle weakness
16.11.2018 | Friedrich-Alexander-Universität Erlangen-Nürnberg
Good preparation is half the digestion
16.11.2018 | Max-Planck-Institut für Stoffwechselforschung
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
09.11.2018 | Event News
06.11.2018 | Event News
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16.11.2018 | Health and Medicine
16.11.2018 | Life Sciences
16.11.2018 | Life Sciences