swˈiːps duːnˌɑːt əkˈɜː wɛn sᵻlˈɛkʃən sˌaɪməltˈeɪniəsli kˈɔːzᵻz vˈɛɹi smˈɔːl ʃˈɪfts ɪn ɐlˈiːl fɹˈiːkwənsiz æt mˈɛni lˈoʊsaɪ ˈiːtʃ wɪð stˈændɪŋ vˌɛɹɪˈeɪʃən pˌɑːlɪdʒˈɛnɪk ˌædæptˈeɪʃən.
Sweeps do not occur when selection simultaneously causes very small shifts in allele frequencies at many loci each with standing variation (polygenic adaptation).