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Non-overlapping generations are found in species in which the adult generation dies after one breeding season. If a species for instance can only survive winter in the juvenile state the species will automatically consist of non-overlapping generations. The bee Amegilla dawsoni, an example of a species with non-overlapping generations
The overlapping generations (OLG) model is one of the dominating frameworks of analysis in the study of macroeconomic dynamics and economic growth.In contrast to the Ramsey–Cass–Koopmans neoclassical growth model in which individuals are infinitely-lived, in the OLG model individuals live a finite length of time, long enough to overlap with at least one period of another agent's life.
The overlap of generations (mother and adult offspring) Cooperative work on the cells of the bees' honeycomb; Weaver ants, here collaborating to pull nest leaves together, can be considered eusocial, as they have a permanent division of labor. E. O. Wilson extended the terminology to include other social insects, such as ants, wasps, and termites.
Overlapping generations means that multiple generations live together, and that older offspring may help the parents raise their siblings. Cooperative brood care is when individuals other than the parents assist in raising the offspring through means such as food gathering and protection.
Suppose there are t non-overlapping generations, then effective population size is given by the harmonic mean of the population sizes: [19] = = For example, say the population size was N = 10, 100, 50, 80, 20, 500 for six generations (t = 6).
Advances in coalescent theory include recombination, selection, overlapping generations and virtually any arbitrarily complex evolutionary or demographic model in population genetic analysis. The model can be used to produce many theoretical genealogies, and then compare observed data to these simulations to test assumptions about the ...
"In generational theory, a cusp is the group of individuals who fall into the overlap between two generations. [...] This overlap creates a cusp generation" which bridges the divide between "major generations". [26] In 2004 Cynthia Cheng wrote a piece for the Toronto Star entitled "My So-Called Generation", where she referred to the cohort as ...
An overlapping gene (or OLG) [1] [2] is a gene whose expressible nucleotide sequence partially overlaps with the expressible nucleotide sequence of another gene. [3] In this way, a nucleotide sequence may make a contribution to the function of one or more gene products.