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Genetic evidence and the modern human origins debate.

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  • المؤلفون: Relethford JH;Relethford JH
  • المصدر:
    Heredity [Heredity (Edinb)] 2008 Jun; Vol. 100 (6), pp. 555-63. Date of Electronic Publication: 2008 Mar 05.
  • نوع النشر :
    Journal Article; Review
  • اللغة:
    English
  • معلومة اضافية
    • المصدر:
      Publisher: Nature Publishing Group Country of Publication: England NLM ID: 0373007 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1365-2540 (Electronic) Linking ISSN: 0018067X NLM ISO Abbreviation: Heredity (Edinb) Subsets: MEDLINE
    • بيانات النشر:
      Publication: <2003->: London : Nature Publishing Group
      Original Publication: London, Oliver and Boyd.
    • الموضوع:
      Biological Evolution* ; Hominidae*; Animals ; DNA/genetics ; Emigration and Immigration ; Fossils ; Genetic Variation ; Humans ; Models, Genetic ; Phylogeny
    • نبذة مختصرة :
      A continued debate in anthropology concerns the evolutionary origin of 'anatomically modern humans' (Homo sapiens sapiens). Different models have been proposed to examine the related questions of (1) where and when anatomically modern humans first appeared and (2) the genetic and evolutionary relationship between modern humans and earlier human populations. Genetic data have been increasingly used to address these questions. Genetic data on living human populations have been used to reconstruct the evolutionary history of the human species by considering how global patterns of human variation could be produced given different evolutionary scenarios. Of particular interest are gene trees that reconstruct the time and place of the most recent common ancestor of humanity for a given haplotype and the analysis of regional differences in genetic diversity. Ancient DNA has also allowed a direct assessment of genetic variation in European Neandertals. Together with the fossil record, genetic data provide insight into the origin of modern humans. The evidence points to an African origin of modern humans dating back to 200,000 years followed by later expansions of moderns out of Africa across the Old World. What is less clear is what happened when these early modern humans met preexisting 'archaic human' populations outside of Africa. At present, it is difficult to distinguish between a model of total genetic replacement and a model that includes some degree of genetic mixture.
    • Number of References:
      45
    • الرقم المعرف:
      9007-49-2 (DNA)
    • الموضوع:
      Date Created: 20080307 Date Completed: 20080530 Latest Revision: 20111209
    • الموضوع:
      20231215
    • الرقم المعرف:
      10.1038/hdy.2008.14
    • الرقم المعرف:
      18322457