title: Genetic drift: genetic screening.
mesh_terms: D005260:Female; D005787:Gene Frequency; D005817:Genetic Counseling; D005820:Genetic Testing; D033161:Government Regulation; D006801:Humans; D011247:Pregnancy; D011863:Radioimmunoassay; D018570:Risk Assessment; D000509:alpha-Fetoproteins / Q000032:analysis*
chemical_list: D000509:alpha-Fetoproteins