نتایج جستجو برای: throughout human evolution history
تعداد نتایج: 2368886 فیلتر نتایج به سال:
Tuberculosis is one of most ancient diseases affecting human populations. Although numerous studies have tried to detect pathogenic DNA in ancient skeletons, the successful identification of ancient tuberculosis strains remains rare. Here, we describe a study of 140 ancient subjects inhumed in Yakutia (Eastern Siberia) during a tuberculosis outbreak, dating from the 16(th)-19(th) century. For a...
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One of the most important advancements in theoretical epidemiology has been the development of methods that account for realistic host population structure. The central finding is that heterogeneity in contact networks, such as the presence of 'superspreaders', accelerates infectious disease spread in real epidemics. Disease control is also complicated by the continuous evolution of pathogens i...
37 evolution, part of an intractable debate that continues to swirl over the origins of anatomically modern people. Many readers are assuredly familiar with the contours of this debate, between those who advocate a recent, uniregional origin for modern Homo sapiens in Africa (henceforth termed the “recent out of Africa,” or ROA, hypothesis) versus those who support a more deeply rooted, multire...
Genetic and cytogenetic comparison in between man and non-human primates has largely contributed to the knowledge of the evolution of the Order Primates, and in particular of man. Recently, the “Chromosome painting” approach indicated a strong conservation of syntenies in Eutheria. At present, a more precise identification of breakpoints and evolutionary related rearrangements can be obtained b...
Social life is one of the most critical factors of the evolution of the behavior of non-human primates and humans. Several factors, such as an increase in brain size, adaptive modules, and grooming, are related to the complexities of social groups. Although some scientists have mentioned foraging as a rival hypothesis for the evolution of behavior, in this research, we tried to investigate the ...
Basic science is integral to medical education because it teaches future physicians the fundamental principles of biology they need to become lifelong learners and keep up with expanding medical knowledge. One of these fundamental principles is evolution, which has many practical applications in medicine. Consequently, there is increasing interest in integrating evolutionary biology into medica...
Life-history modes can profoundly impact the biology of a species, and a classic example is the dichotomy between metamorphic (biphasic) and paedomorphic (permanently aquatic) life-history strategies in salamanders. However, despite centuries of research on this system, several basic questions about the evolution of paedomorphosis in salamanders have not been addressed. Here, we use a nearly co...
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