Wiktionary
n. The study of the allele frequency distribution and change under the influence of the four evolutionary processes: natural selection, genetic drift, mutation and gene flow.
Wikipedia
Population genetics is the study of the distribution and change in frequency of alleles within populations, and as such it sits firmly within the field of evolutionary biology. The main processes of evolution are natural selection, genetic drift, gene flow and mutation and they form an integral part of the theory that underpins population genetics. Studies in this branch of biology examine such phenomena as adaptation, speciation, population subdivision, and population structure.
Population genetics was a vital ingredient in the emergence of the modern evolutionary synthesis. Its primary founders were Sewall Wright, J. B. S. Haldane and Ronald Fisher, who also laid the foundations for the related discipline of quantitative genetics.
Traditionally a highly mathematical discipline, modern population genetics encompasses theoretical, lab, and field work. Computational approaches, often utilising coalescent theory, have played a central role since the 1980s. In the laboratory, the use of DNA fingerprinting tools have also played a central role since the 1980s.
Usage examples of "population genetics".
The whole dogma about DNA, messenger RNA, and proteins has been given a reality check, and science's internal `auditors' have rendered it as archaic as Fisher's population genetics.
Haldane, who was, among many other things, one of the founders of population genetics.
These are questions, not for hermeneutics or semiotics, but rather for population genetics.