GENETICS: Pressure Under Pressure
نویسندگان
چکیده
منابع مشابه
Population genetics: Surviving under mutation pressure
Concern has been voiced about the survival of endangered species, and even the long-term prospects for humans, in the face of accumulating deleterious mutations. Two experiments have investigated the mutation accumulation process in laboratory Drosophila populations, with apparently conflicting results.
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The movement of water by osmosis causes pressure differences that drive the transport of sugars over long distances in plants.
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Abstract A variety of public campaigns, including the “Just Say No” campaign of the 1980s and 1990s that encouraged teenagers to “Just Say No to Drugs”, are based on the premise that teenagers are very susceptible to peer influences. Despite this, very little is known about the effect of school peers on the long-run outcomes of teenagers. This is primarily due to two factors: the absence of inf...
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Introduction: This study aimed to investigate the diurnal intraocular pressure fluctuations under dehydration conditions and the relationship between the intraocular pressure fluctuations and blood pressure. Methods: The intraocular pressures (IOP), body weights, as well as systolic and diastolic blood pressures (SBP, DBP) of 36 fasting healthy volunteers were recorded at 8:00 a.m. and 5:00 p.m...
متن کاملHotelling Under Pressure
We show that crude oil production from existing wells in Texas does not respond to current or expected future oil prices, contradicting a basic prediction of Hotelling’s (1931) canonical model of exhaustible resource extraction. In contrast, the drilling of new wells exhibits a strong price response, as does the rental rate on drilling rigs. To explain these observations, we reformulate Hotelli...
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ژورنال
عنوان ژورنال: Science
سال: 2005
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.310.5755.1745a