ɐ sᵻlˈɛktɪv swˈiːp dˈuː tʊ ɐ stɹˈɔŋli sᵻlˈɛktᵻd ɐlˈiːl, wˌɪtʃ ɚɹˈoʊz ˌɔn ɐ sˈɪŋɡəl dʒɛnˈɑːmɪk bˈækɡɹaʊnd, ðˈɛɹfoːɹ ɹɪzˈʌlts ɪn ɐ ɹˈiːdʒən ʌvðə dʒˈiːnoʊm wɪð ɐ lˈɑːɹdʒ ɹᵻdˈʌkʃən ʌv dʒɪnˈɛɾɪk vˌɛɹɪˈeɪʃən ɪn ðæt kɹˈoʊməsˌoʊm ɹˈiːdʒən.
A selective sweep due to a strongly selected allele, which arose on a single genomic background, therefore results in a region of the genome with a large reduction of genetic variation in that chromosome region.