ɪn dʒɪnˈɛɾɪks, ɐ sᵻlˈɛktɪv swˈiːp ɪz ðə pɹˈɑːsɛs θɹuː wˌɪtʃ ɐ nˈuː bˌɛnɪfˈɪʃəl mjuːtˈeɪʃən ðæt ɪŋkɹˈiːsᵻz ɪts fɹˈiːkwənsi ænd bɪkˌʌmz fˈɪkst ˈaɪ.ˈiː., ɹˈiːtʃᵻz ɐ fɹˈiːkwənsi ʌv wˈʌn ɪnðə pˌɑːpjʊlˈeɪʃən lˈiːdz tə ðə ɹᵻdˈʌkʃən ɔːɹ ᵻlˌɪmᵻnˈeɪʃən ʌv dʒɪnˈɛɾɪk vˌɛɹɪˈeɪʃən ɐmˌʌŋ nˈuːklɪˌɑːɾaɪd sˈiːkwənsᵻz ðæt ɑːɹ nˌɪɹ ðə mjuːtˈeɪʃən.
In genetics, a selective sweep is the process through which a new beneficial mutation that increases its frequency and becomes fixed (i.e., reaches a frequency of 1) in the population leads to the reduction or elimination of genetic variation among nucleotide sequences that are near the mutation.