Gene flow

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Gene flow (gene migration) is the introduction or loss of genes (alleles for eukaryotes) into a population through immigration or emigration of individual organisms between established populations.

Gene flow will homogenise gene frequencies and eliminates local differences between populations.

Gene flow and biohydrometallurgy

In molecular biotechnology cultures are either pure or non-sterile. Biohydrometallurgy exclusively (?) uses non-sterile cultures.

In non-sterile cultures for bioleaching or water treatment, gene flow is an important and useful mechanism that “imports” genes from surrounding populations in nature. In this way, a culture may take advantage of a much bigger “pantry” of genes than the culture itself provides. The inflow of genes will seldom damage applications like bioleaching and water treatment as natural selection usually "promotes" the anthropogenic intention to select for those organisms that are best suited to the local environment and the available electron donor. In pure cultures, inflow of other organisms is usually a problem as the new organisms may take over the culture and not oppose the anthropogenic intention of the culture.

Image:Gene flow.png

See also

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