The ALlele FREquency Database    ALFRED is a resource of gene frequency data on human populations supported by the Yale Center for Medical Informatics.

Sample Information:

This sample consists of Mayans who are Yucatec speakers from in the Xmaben village located in the Mexican state of Campeche in the central Yucatan peninsula. Blood and serum markers indicate European admixture to be about 10 % (K. Weiss, personal communication). Some evidence suggests that the area from which this sample was drawn served as a refuge for Maya people from across southern Mexico who fled to this more remote region during a series of revolts against the Spanish in the 19th and early 20th centuries. There are 53 transformed cell lines (106 chromosomes) established by Judith R. Kidd. The sources of this sample are K.K. Kidd and J.R. Kidd (Yale University).

Note: In many publications subset H952 of the HGDP panel (with first and second degree relatives excluded from the original set) was typed and for this population that decreases the sample size from 25 to 21 individuals. For the studies H971 subset with only the first degree relatives excluded the sample size decreases from 25 to 23.
References:
- Rosenberg NA, Pritchard JK, Weber JL, Cann HM, Kidd KK, Zhivotovsky LA, Feldman MW. "Genetic structure of human populations". Science 298:2381-2385. (2002) Online citation.

© 2019 Kenneth K Kidd, Yale University. All rights reserved. The full Copyright Notification is also available.
Originally prototyped by Michael Osier with the aid of Kei Cheung
Upgrades and maintenance since 2002 by Haseena Rajeevan