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Doubts about isonymy.

A R Rogers1

  • 1Department of Anthropology, University of Utah, Salt Lake City 84112.

Human Biology
|October 1, 1991
PubMed
Summary
This summary is machine-generated.

The isonymy method for estimating inbreeding using surnames is limited because it assumes unique ancestral surnames, which is rarely true. This assumption makes the method

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Area of Science:

  • Population Genetics
  • Anthropology
  • Human Genetics

Background:

  • The method of isonymy, developed by Crow and Mange, is used to estimate inbreeding coefficients.
  • It relies on surname frequencies within a population.
  • A critical assumption of this method has been overlooked.

Purpose of the Study:

  • To critically evaluate the assumptions underlying the isonymy method.
  • To assess the practical applicability and informational value of isonymy-derived inbreeding estimates.

Main Methods:

  • Analysis of the core assumption of the isonymy method.
  • Evaluation of the justification for assuming unique surnames in ancestral populations.

Main Results:

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  • The isonymy method requires the assumption that all males in an ancestral founding stock had unique surnames.
  • This assumption is seldom met in real-world populations.
  • Consequently, the applicability of the isonymy method is severely restricted.

    • Conclusions:

    • Estimates of inbreeding derived from the isonymy method are of questionable value.
    • The method's estimates pertain to an unspecified founding stock, rendering them uninformative.
    • Researchers should exercise caution when applying the isonymy method.