bɪkˈʌz sᵻlˈɛktɪv swˈiːps ɐlˈaʊ fɔːɹ ɹˈæpɪd ˌædæptˈeɪʃən, ðeɪ hɐvbɪn sˈaɪɾᵻd æz ɐ kˈiː fˈæktɚɹ ɪnðɪ ɐbˈɪləɾi ʌv pˌæθoʊdʒˈɛnɪk bæktˈɪɹiə ænd vˈaɪɹəsᵻz tʊ ɐtˈæk ðɛɹ hˈoʊsts ænd sɚvˈaɪv ðə mˈɛdəsənz wiː jˈuːz tə tɹˈiːt ðˌɛm.
Because selective sweeps allow for rapid adaptation, they have been cited as a key factor in the ability of pathogenic bacteria and viruses to attack their hosts and survive the medicines we use to treat them.