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Sperm proteome gives 'tantalizing glimpse' towards the origin of sex
11-12-2006 · EurekAlert!The first ever catalogue of the different types of proteins found in sperm could help reveal the origins of sex and explain some of the mysteries of infertility, say scientists.
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Keywords: sperm, proteome, tantalizing, glimpse, towards, origin, sex, toward
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- Sperm proteome gives “tantalising glimpse” towards the origin of sex
11-12-2006 · University of Bath
The first ever catalogue of the different types of proteins found in sperm could help reveal the origins of sex and explain some of the mysteries of infertility, say scientists in the Department of Biology & Biochemistry.
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- Feeling sad about Iraq? New research finds that it won't keep you from buying American products
12-05-2006 · EurekAlert!
The United States' involvement in Iraq has generated a lot of debate about the potential impact on American businesses abroad. Yet, very little systematic research has addressed the effect of geo-political conflicts on consumer decision-making. Now, a new study explores how our range of reactions to political events may affect purchasing. Notably, the researchers found that not all negative feelings towards a country will lead to product evaluations based on country of origin.
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- Romance, schmomance -- Natural selection continues even after sex
02-12-2007 · EurekAlert!
Some breaking news, just in time for Valentine's Day -- Researchers have identified something called "sperm competition" that they think has evolved to ensure a genetic future.
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- A new male-specific gene in algae unveils an origin of male and female
12-18-2006 · EurekAlert!
By studying the genetics of two closely related species of green algae that practice different forms of sexual reproduction, researchers have shed light on one route by which evolution gave rise to reproduction though the joining of distinct sperm and egg cells.
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- Simple reason helps males evolve more quickly
11-14-2007 · EurekAlert!
Evolutionary biologists have focused on sex differences since Darwin's "Origin of Species." A straightforward but seemingly underappreciated explanation for the ability of males to answer the call of sexual selection may be that their genetic machinery is simpler.
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- Gene in male fish lures females into sex
11-14-2007 · EurekAlert!
A gene has been found in male cichlid fish that evolved to lure female fish so that male cichlids can deposit sperm in the females mouths. A study in the online open-access journal BMC Biology reveals that the gene is associated with egg-like markings on the fins of cichlid fishes and uncovers the evolutionary history of these markings, which are central to the success of the fishes' exotic oral mating behavior.
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- Mouse model advances understanding of synovial sarcoma
04-09-2007 · EurekAlert!
A mouse model for synovial sarcoma has enabled scientists to make tremendous progress toward understanding the origin and pathogenesis of this highly aggressive soft-tissue malignancy. The research, published in the April issue of the journal Cancer Cell, published by Cell Press, provides new information about the timing and environment required for initiation and progression of synovial sarcoma. The mouse model is also likely to serve as an invaluable resource for development of successful therapeutic strategies for this often lethal cancer.
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- RNA enzyme structure offers a glimpse into the origins of life
03-15-2007 · EurekAlert!
Researchers have determined the three-dimensional structure of an RNA enzyme, or "ribozyme," that carries out a fundamental reaction required to make new RNA molecules. Their results provide insight into what may have been the first self-replicating molecule to arise billions of years ago on the evolutionary path toward the emergence of life.
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- How does one sex grow larger than the other?
01-29-2007 · EurekAlert!
In most arthropod groups females are larger and therefore grow faster, a pattern markedly different from primates and birds, which showed differences in growth period. One explanation of why females can grow faster is that, although it is generally cheaper to produce (small) sperm than (large) eggs, it may be costlier to produce male gonads and genitalia.
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- NASA: major step toward knowing origin of cosmic rays
10-09-2007 · EurekAlert!
Recent observations from NASA and Japanese X-ray observatories have helped clarify one of the long-standing mysteries in astronomy -- the origin of cosmic rays.
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