skip navigation


Register for Latest Research

Stay Informed
Register with NCJRS to receive NCJRS's biweekly e-newsletter JUSTINFO and additional periodic emails from NCJRS and the NCJRS federal sponsors that highlight the latest research published or sponsored by the Office of Justice Programs.

NCJRS Abstract

The document referenced below is part of the NCJRS Virtual Library collection. To conduct further searches of the collection, visit the Virtual Library. See the Obtain Documents page for direction on how to access resources online, via mail, through interlibrary loans, or in a local library.


NCJ Number: 134748 Find in a Library
Title: Blood Group Frequencies of the Population of Trinidad and Tobago, West Indies
Journal: Journal of the Forensic Science Society  Volume:31  Issue:4  Dated:(October/December 1991)  Pages:441-447
Author(s): Y Thompson; R Williams
Date Published: 1991
Page Count: 7
Type: Report (Technical Assistance)
Format: Article
Language: English
Country: United Kingdom
Annotation: Information on the phenotypic and allele frequencies of blood group tests is presented for blood samples collected from the African and East Indian population over a 5-year period at the Trinidad and Tobago Forensic Science Center.
Abstract: The samples were tested using the ABO, phosphoglucomutase (PGM), erythrocytes acid phosphatase (EAP), and glyoxalase I (GLO) blood group systems. In both ethnic groups, the most frequent alleles in the ABO, PGM, EAP, and GLO systems were O, OGM 1+, EAP B, and GLO 2, respectively. However, the data revealed significant differences between the 2 groups, 19.4 percent of Africans compared with 33.5 percent of East Indians carry the ABO B phenotype and 62.7 percent of Africans compared with 33.5 percent of East Indians carry the EAP B phenotype. Using the chi square test, a comparison of the allele frequencies between different populations revealed a significant difference when the East Indians were compared with the Indians and the Pakistanis in the EAP system. Although the calculated matching probabilities appear quite large, they are effective in terms of discriminating between two randomly selected individuals, because they are fairly close to their respective theoretical minimum values. However, EAP was the least effective in this regard when compared with the other systems. 3 tables and 9 references (Author abstract modified)
Main Term(s): Blood/body fluid analysis
Index Term(s): DNA fingerprinting; Ethnic groups; Trinidad/Tobago
To cite this abstract, use the following link:

*A link to the full-text document is provided whenever possible. For documents not available online, a link to the publisher's website is provided. Tell us how you use the NCJRS Library and Abstracts Database - send us your feedback.