Title:Consanguine Marriage Leads to Hierarchical Imbalance of ABO and STR Frequency and Affects the Genetic Diversity
Volume: 3
Author(s): Suneel Prajapati*
Affiliation:
- Department of Biology and DNA Divison, Central Forensic Science Laboratory, Pune, Maharashtra, 410507, India
Keywords:
Inbreeding, consanguine, short tandem repeat, DNA, ABO group, consanguinity marriages.
Abstract: Consanguinity marriages pose a serious social issue for civil society, leading to genetic
syndromes, depression, and imbalanced ABO blood types and STR frequencies. Analyzing
dermatoglyphics in regions with prevalent consanguineous marriages can establish a correlation
with ABO frequency. Consanguineous marriages complicate forensic DNA analysis due to reduced
genetic diversity. Inbreeding within a closed, small population tends to accelerate the loss
of genetic diversity and decrease the heterozygosity of genes, ultimately leading to complete
homozygosity, fixation of rare alleles, and potential misidentification in inbred populations. Forensic
investigations require careful consideration of population structure. Short Tandem Repeat
(STR) profiling is effective but should be complemented with population-specific databases, additional
genetic markers, and advanced statistical methods to address the effects of inbreeding.
Understanding the genetic nuances in inbred populations can enhance the accuracy and reliability
of DNA profiling.