What are the cons of artificial selection?
Artificial selection, also known as selective breeding, is the process in which favorable traits or characteristics (longer lifespan, better aesthetic appearance, higher productivity, etc.) are selectively bred into a particular species of animals or plants. This allows the development of species with all the favorable characteristics.
However, there are a number of disadvantages to this process. Presence of favorable characteristics in a single species limits the gene pool, since all the farmers may prefer that plant over others for its higher profitability. There could be chances that while the selected species is better in terms of its chosen characteristics, it may be susceptible to particular soil conditions or disease (unintended consequences of selective breeding), and the onset of such conditions may affect the entire crop. This would result in wipeout of entire crop in that particular season. There are higher chances of genetic mutations in such selected species as well. In addition, the choice of "selective" traits is very subjective, that is, varies from person to person.
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