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Using Surname Models To Study Population Structure And Population Dynamics Of Puerto Rico
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Using Surname Models To Study Population Structure And Population Dynamics Of Puerto Rico

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RISE Proposal Presentation. September 16,2009

RISE Proposal Presentation. September 16,2009

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  • 1. Using Surname Models to Study the Population Structure and Population Dynamics of Puerto Rico. Melissa N. Martinez Trinidad 1 Department Of Natural Sciences Prof. Adolfo Gonzalez 1* Department of Mathematics-Physics Jose Alvarado 2 Biostatistician at the Interdisciplinary Research Institute 1,1*,2 University of Puerto Rico at Cayey
  • 2. Description
    • In Surname models, surnames are used as biomarkers .
    • Since 19 th century they have been used to study population dynamics and genetic structure.
  • 3. Advantages and disadvantages
    • Advantages:
    • Sources for raw data: Church records in the past, telephone directories and electoral registries in modern times.
    • Disadvantages:
    • Most surnames are not monophyletic.
      • Nevertheless, surname models have been validated in many occasions .
  • 4. Project Goals
    • Estimate the population genetic structure of Puerto Rico using the isonymy model.
    • Study the surname frequency distribution of the surnames of Puerto Rico, and thus obtain population dynamics indicators related mostly to immigration.
  • 5. Background and Significance: Population Genetic Structure
    • Isonymy model: First used by George Darwin in 1875 to estimate endogamy in different localities.
  • 6.
    • Isonymy has been shown to be a valid method for estimating the genetic structure of a population.
    • The population genetic structure of PR has not been studied before .
    Background and Significance: Population Genetic Structure
  • 7. Consanguinity
  • 8.  
  • 9. Background and Significance: Population Dynamics
    • Surname models in population dynamics first used by Francis Galton and Henry Watson in 1874 to study the extinction of families.
    • Distributions of surname frequencies follow a power-law behavior for most countries: y = ax -k
    • The surname frequency distribution of PR has not been studied before .
  • 10. Experimental Design
    • Data collection: telephone directories.
    • Data analysis: cluster analysis.
    • Minimizing the effect of the polyphyleticity of surnames.
    • Surname frequency distribution.
    • Effect that the imposition of surnames has on the distribution of surnames.
  • 11. Literature
    • G H Darwin (1875), “Marriages between first cousins in England and their effects”, Journal of the Statistical Society, volume 38, pp. 153-184
    • A. De Silvestri, and C. R. Guglielmino (2004), “Sicilian Provinces: Population Subdivisions Revealed by Surname Frequencies”, Human Biology, volume 76, pp. 901-920
    • G. Zei, A. Lisa, O. Fiorani, C. Magri, L. Quintana-Murci, O. Semino, and A. S. Santachiara-Benerecetti (2003), “From surnames to the history of Y chromosomes: the Sardinian population as a paradigm”, European Journal of Human Genetics, volume 11, pp. 802-807
    • H. W. Watson and F. Galton (1875), "On the Probability of the Extinction of Families", Journal of the Anthropological Institute of Great Britain, volume 4, pp. 138–144
    • S. K. Baek, H. A. T. Kiet, and B. J. Kim (2007), “Family name distributions: Master equation approach”, Physical Review E, volume 76, 046113
    • T. E. King, S. J. Ballereau, K. E. Schürer, and M. A. Jobling (2006), “Genetic Signatures of Coancestry within Surnames”, Current Biology, volume 16, pp. 384-388
    • R. Cortés Chico, “Los genes del lupus boricua”, El Nuevo Día, martes 23 de diciembre de 2008, p. 26
  • 12. Questions?