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Genome Biology 2(1):interactions1001.1-1001.2. Krebs HA (1975). The August Krogh principle: "For many problems there is an animal on which it can be most conveniently studied." Journal of Experimental Zoology 194:221-226. Krogh A (1929). The progress of physiology. American Journal of Physiology 90:243-251. "Krogh's principle for a new era."
Phylogenetic analysis predicts that 2% of early H. sapiens would be murdered, rising to 12% during the medieval period, before dropping to below 2% in modern times. [463] There is great variation in violence between human populations, with rates of homicide about 0.01% in societies that have legal systems and strong cultural attitudes against ...
In a large study based on 5 birth cohorts in Brazil, Guatemala, India, the Philippines and South Africa, faster linear growth at 0–2 years was associated with improvements in adult stature and school performance, but also an increased likelihood of overweight (mainly related to lean mass) and a slightly elevated blood pressure in young adulthood.
Most evidence seems to suggest the assignment of orders is accurate, [61] but scientists disagree about the relationships among the orders themselves; evidence from modern bird anatomy, fossils and DNA have all been brought to bear on the problem, but no strong consensus has emerged. Fossil and molecular evidence from the 2010s is providing an ...
The time range for the evolution of human language and/or its anatomical prerequisites extends, at least in principle, from the phylogenetic divergence of Homo (2.3 to 2.4 million years ago) from Pan (5 to 6 million years ago) to the emergence of full behavioral modernity some 50,000–150,000 years ago.
Professor of animal physiology and experienced scuba and freediver Erika Schagatay researches human diving abilities and oxygen stress. She suggests that such abilities are consistent with selective pressure for underwater foraging during human evolution, and discussed other anatomical traits speculated as diving adaptations by Hardy/Morgan. [ 73 ]
Evolution is the change in the heritable characteristics of biological populations over successive generations. [1] [2] It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, resulting in certain characteristics becoming more or less common within a population over successive generations. [3]
"As We Know It" is the 17th episode of the second season of the American television medical drama Grey's Anatomy and the show's 26th episode overall. Written by series creator Shonda Rhimes and directed by co-executive producer Peter Horton , it originally aired on February 12, 2006, and is the second of a two-part story, following the first ...