Biomaterial Database

Genetic distance analysis of twenty-two South American Indian populations. 1975

R Blanco, and R Chakraborty

Extent of genic variability among 22 tribal groups of South American Indians in terms of net codon differences per locus has been studied on the basis of determinations on ten genetic systems. The possibility of more than one (other than the north-south route, considered by others) migrational pattern is discussed in the light of the existing genetic variability among the Andean highland and the jungle populations. Genic similarities (as measured by gene identity) are related with geographic proximities which reflect the importance of random genetic drift in creating the present genic divergence among these population groups. Although the materials used in this paper form probably only a non-random sample of structural genome, intralocus variance (sampling) is found to contribute only a little in the variabilities of heterozygosity or genetic distance.

UI	MeSH Term	Description	Entries
D007199	Indians, South American	Members of indigenous South American populations with pre-colonial contact origins.	Amerinds, South American,Indigenous South Americans,American Amerind, South,American Indian, South,American, Indigenous South,Americans, Indigenous South,Amerind, South American,Indian, South American,Indigenous South American,South American Amerind,South American Amerinds,South American Indian,South American Indians,South American, Indigenous,South Americans, Indigenous
D010568	Peru	A country in western South America, bordering the South Pacific Ocean, and located between Chile and Ecuador.
D001838	Bolivia	A country in central South America, located southwest of Brazil.
D001938	Brazil	A country located on the eastern coast of South America, located between Colombia and Peru, that borders the Atlantic Ocean. It is bordered on the north by Venezuela, Guyana, Suriname, and French Guiana, on the south by Uruguay, and on the west by Argentina. The capital is Brasilia.
D002677	Chile	A country in southern South America, bordering the South Pacific Ocean, between Argentina and Peru.
D003062	Codon	A set of three nucleotides in a protein coding sequence that specifies individual amino acids or a termination signal (CODON, TERMINATOR). Most codons are universal, but some organisms do not produce the transfer RNAs (RNA, TRANSFER) complementary to all codons. These codons are referred to as unassigned codons (CODONS, NONSENSE).	Codon, Sense,Sense Codon,Codons,Codons, Sense,Sense Codons
D004484	Ecuador	A country in western South America, bordering the Pacific Ocean at the equator, between Colombia and Peru.	Galapagos Islands
D006579	Heterozygote	An individual having different alleles at one or more loci regarding a specific character.	Carriers, Genetic,Genetic Carriers,Carrier, Genetic,Genetic Carrier,Heterozygotes
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014644	Genetic Variation	Genotypic differences observed among individuals in a population.	Genetic Diversity,Variation, Genetic,Diversity, Genetic,Diversities, Genetic,Genetic Diversities,Genetic Variations,Variations, Genetic