The process of the colonization of the New World that occurred centuries ago served as a natural experiment, creating unique combinations of genetic material in newly formed admixed populations. Through a genetic admixture approach, the identification and genotyping of ancestry informative markers have allowed for the estimation of proportions of ancestral parental populations among individuals in a sample. These admixture estimates have been used in different ways to understand the genetic contributions to individual variation in obesity and body composition parameters, particularly among diverse admixed groups known to differ in obesity prevalence within the United States. Although progress has been made through the use of genetic admixture approaches, further investigations are needed in order to explore the interaction of environmental factors with the degree of genetic ancestry in individuals. A challenge to confront at this time would be to further stratify and define environments in progressively more granular terms, including nutrients, muscle biology, stress responses at the cellular level, and the social and built environments.
© 2013 S. Karger AG, Basel
- Genetic admixture
- Body composition
- Ancestry informative markers
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Assoc. Prof. Dr. Jose R. Fernandez
Department of Nutrition Sciences, University of Alabama at Birmingham
WEBB 449A-1720 2nd Avenue South
Birmingham, AL 35294-3360 (USA)
Published online: September 27, 2013
Number of Print Pages : 8
Number of Figures : 1, Number of Tables : 1, Number of References : 67
Human Heredity (International Journal of Human and Medical Genetics)
Vol. 75, No. 2-4, Year 2013 (Cover Date: September 2013)
Journal Editor: Clerget-Darpoux F. (Paris)
ISSN: 0001-5652 (Print), eISSN: 1423-0062 (Online)
For additional information: http://www.karger.com/HHE
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