NO! Bajoran's have secreted away vaginal pouches that store sperm for when there are no Bajoran men attractive enough to mate with which is most of the time so that the race won't die out and since Seska is a perfect Bajoran replica she uses this for her own ends.. but it fails. Because either a. she was already pg with the Kazon child or b. Chak's sperm didn't work. Unfortunately the secreted away vaginal pouch does not contain equipment to measure motility of sperm.