title: Delta-aminolevulinate dehydrase (ALAD) polymorphism in mixed Brazilians from the State of Bahia.
abstract: Electrophoretic polymorphism of delta-aminolevulinate dehydrase (ALAD) was studied on 519 individuals from Bahia, Brazil. Subjective assessment of Black ancestries carried out in a five point visual scale (White, Light Mulatto, Medium Mulatto, Dark Mulatto and Black) allowed to show that the ALAD*2 allele frequency decreases from 8% in Whites to 0% in Blacks. These findings agree with previous reports of ALAD in Africans, American Indians and Spanish. The powerful peculiarity of the ALAD system in assessing racial admixture is stressed.
authors.affiliation: Hospital Universitário Prof. Edgard Santos, Departamento de Medicina Preventiva, Universidade Federal de Bahia, Brazil.
authors.forename: M G
authors.initials: MG
authors.lastname: Sousa
authors.forename: M C
authors.initials: MC
authors.lastname: Silva
authors.forename: A F
authors.initials: AF
authors.lastname: Duarte
authors.forename: E S
authors.initials: ES
authors.lastname: Azevêdo
mesh_terms: D000483:Alleles; D044383:Black People / Q000235:genetics*; D001938:Brazil; D005260:Female; D006801:Humans; D010641:Phenotype; D011110:Polymorphism, Genetic / Q000235:genetics*; D000623:Porphobilinogen Synthase / Q000235:genetics*; D044465:White People / Q000235:genetics*
chemical_list: D000623:Porphobilinogen Synthase