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The word generate comes from the Latin generāre, meaning "to beget". [4] The word generation as a group or cohort in social science signifies the entire body of individuals born and living at about the same time, most of whom are approximately the same age and have similar ideas, problems, and attitudes (e.g., Beat Generation and Lost Generation).
In population biology and demography, generation time is the average time between two consecutive generations in the lineages of a population.In human populations, generation time typically has ranged from 20 to 30 years, with wide variation based on gender and society.
The 'alternation of generations' in the life cycle is thus between a diploid (2n) generation of multicellular sporophytes and a haploid (n) generation of multicellular gametophytes. [17] Gametophyte of the fern Onoclea sensibilis (flat thallus, bottom) with a descendant sporophyte beginning to grow from it (small frond, top)
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
Millennials get the period from 1981 to 1996, another 15 year interval, then Generation Z is the term for those born 1997 to 2012, another 15-year “generation.”
Pasteur and others used the term biogenesis as the opposite of spontaneous generation, to mean that life was generated only from other life. Pasteur's claim followed the German physician Rudolf Virchow 's doctrine Omnis cellula e cellula ("all cells from cells"), [ 49 ] itself derived from the work of Robert Remak .
Fixation rates can easily be modeled as well to see how long it takes for a gene to become fixed with varying population sizes and generations. For example, The Biology Project Genetic Drift Simulation allows to model genetic drift and see how quickly the gene for worm color goes to fixation in terms of generations for different population sizes.
This generation is known for being digital natives, even more so than Gen Z, having been born into a world that is fully integrated with technology, social media and global connection.