Mitochondrial footprints of human expansions in Africa

Am J Hum Genet. 1997 Sep;61(3):691-704. doi: 10.1086/515503.

Abstract

mtDNA studies support an African origin for modern Eurasians, but expansion events within Africa have not previously been investigated. We have therefore analyzed 407 mtDNA control-region sequences from 13 African ethnic groups. A number of sequences (13%) were highly divergent and coalesced on the "mitochondrial Eve" in Africans. The remaining sequences also ultimately coalesced on this sequence but fell into four major clusters whose starlike phylogenies testify to demographic expansions. The oldest of these African expansions dates to approximately 60,000-80,000 years ago. Eurasian sequences are derived from essentially one sequence within this ancient cluster, even though a diverse mitochondrial pool was present in Africa at the time.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Africa South of the Sahara / ethnology
  • African Continental Ancestry Group / genetics
  • Asia
  • Base Sequence
  • Biological Evolution
  • DNA, Mitochondrial / genetics*
  • Ethnic Groups / genetics*
  • Europe
  • Evolution, Molecular*
  • Genetic Variation / genetics
  • Haplotypes
  • Humans
  • Molecular Sequence Data
  • Phylogeny*
  • Population Dynamics*

Substances

  • DNA, Mitochondrial

Associated data

  • GENBANK/U93919
  • GENBANK/U93920
  • GENBANK/U93921
  • GENBANK/U93922
  • GENBANK/U93923
  • GENBANK/U93924
  • GENBANK/U93925
  • GENBANK/U93926
  • GENBANK/U93927
  • GENBANK/U93928
  • GENBANK/U93929
  • GENBANK/U93930
  • GENBANK/U93931
  • GENBANK/U93932
  • GENBANK/U93933
  • GENBANK/U93934
  • GENBANK/U93935
  • GENBANK/U93936
  • GENBANK/U93937
  • GENBANK/U93938
  • GENBANK/U93939
  • GENBANK/U93940
  • GENBANK/U93941
  • GENBANK/U93942
  • GENBANK/U93943
  • GENBANK/U93944
  • GENBANK/U93945
  • GENBANK/U93946
  • GENBANK/U93947
  • GENBANK/U93948