Individual histories and selection in heterogeneous populations
نویسندگان
چکیده
منابع مشابه
Individual histories and selection in heterogeneous populations.
The strength of selection in populations has traditionally been inferred by measuring changes in bulk population parameters, such as mean reproductive rates. Untangling the effect of selection from other factors, such as specific responses to environmental fluctuations, poses a significant problem both in microbiology and in other fields, including cancer biology and immunology, where selection...
متن کاملNatural selection of cooperation and degree hierarchy in heterogeneous populations.
One of the current theoretical challenges to the explanatory powers of Evolutionary Theory is the understanding of the observed evolutionary survival of cooperative behavior when selfish actions provide higher fitness (reproductive success). In unstructured populations natural selection drives cooperation to extinction. However, when individuals are allowed to interact only with their neighbors...
متن کاملIndividual versus Aggregate Income Elasticities for Heterogeneous Populations
The paper deals with different concepts of income elasticities of demand for a heterogenous population and the relationship between individual and aggregate elasticities is analyzed. In general, the aggregate elasticity is not equal to the mean of individual elasticities. The difference depends on the heterogeneity of the population and is quantified by a covariance term. Sign and magnitude of ...
متن کاملLife histories of pathogen populations.
The populations of pathogens in individual hosts have many of the characteristics of multicellular organisms, or individuals. These populations go through a life cycle within a host and they reproduce by founding daughter populations in new hosts. Natural selection shapes the life history characteristics of pathogen populations--life expectancy, trade-offs in the allocation of resources between...
متن کاملSession title: BIOARCHAEOLOGY OF INDIVIDUAL LIFE HISTORIES
The field of archaeological science is rapidly expanding. This growth includes laboratory methods for examination of human skeletal remains such as stable isotope ratios of carbon, nitrogen, oxygen, and strontium, as well as ancient DNA analyses. Together with equally advancing methods of macroscopic and microscopic studies, these new techniques, combined with the investigation of artefacts and...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2010
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.0912538107