Beanbag genetics is a conceptual model of genetics which was used by early Mendelians, who used to keep colored beans in bags as a way of tracking Mendelian ratios. To be able to understand beanbag genetics, the meaning of population has to change. Population is no longer a group of individuals in an area but are all the Alleles in an area that assort and segregate separately. Mayr created the name, beanbag, because all the alleles were thought of like beans in a beanbag. The beanbag full of beans would be considered the gene pool for the population. When using the beanbag approach, there are two ways that the gene pool can be viewed. The first is to view the gene pool as all the alleles that represent traits in the population be viewed at once. The second, the gene pool could only be alleles for a single trait in the population.The phrase was first coined by Ernst Mayr in criticizing the work of Ronald Fisher and J. B. S. Haldane who treated genes as independent entities to simplify their mathematical analysis of population genetics.
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External Links
"Beanbag Population Genetics [1]"