explain the role of language in evolution of human culture
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Language evolution is the application of evolutionary theory to the study of language.
We tend to think of evolution as being mainly a process that affects biological populations, so it's worth starting with a definition of that.
Biological evolution is standardly defined as change in allele frequencies in populations over time. This change can occur as a result of selection – if members of a population with certain alleles get eaten by predators more often, for example, those alleles will become rarer – but this is not the whole story. Random variation in the frequencies of alleles that get transmitted between generations can also lead, ultimately, to big changes. This is known as drift.
We tend to think of evolution as being mainly a process that affects biological populations, so it's worth starting with a definition of that.
Biological evolution is standardly defined as change in allele frequencies in populations over time. This change can occur as a result of selection – if members of a population with certain alleles get eaten by predators more often, for example, those alleles will become rarer – but this is not the whole story. Random variation in the frequencies of alleles that get transmitted between generations can also lead, ultimately, to big changes. This is known as drift.
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