title: Generational change in skin color variation among Habbani Yemeni Jews.
abstract: The Habbani Yemeni Jews were a religious isolate in Yemen for centuries. Since a bottleneck in the late eighteenth century the population, composed of six partrilineages, has steadily grown. Isonymy analysis of Habbani genealogies reveals a significant increase in lineage endogamy by the early twentieth century, suggesting that microdifferentiation of Habbani population genetic structure along the patrilineages was occurring. We examine reflectance data from a "parental" generation of 159 individuals studied by Hulse in the 1960s and reflectance data from an "offspring" generation of 243 individuals studied by Towne in the 1980s. A greater amount of interlineage skin color differences is found in the offspring generation than in the parental generation. This finding is consistent with what is known of the evolution of Habbani population genetic structure.
authors.affiliation: Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri 63110.
authors.forename: B
authors.initials: B
authors.lastname: Towne
authors.forename: F S
authors.initials: FS
authors.lastname: Hulse
mesh_terms: D005260:Female; D005788:Gene Pool; D014644:Genetic Variation; D005828:Genetics, Population; D006801:Humans; D007585:Jews / Q000235:genetics*; D008297:Male; D010375:Pedigree; D011157:Population Dynamics; D012880:Skin Pigmentation / Q000235:genetics*; D015006:Yemen