SNPs in forensic genetics: a review on SNP typing methodologies.

Area of Science:

• Forensic Genetics
• Molecular Biology
• Genotyping Technologies

Background:

• Growing interest in single nucleotide polymorphism (SNP) typing within forensic science.
• SNPs are valuable for Y chromosome and mtDNA haplogrouping, geographical origin analysis, and autosomal SNP applications.
• Autosomal SNPs offer advantages in paternity testing and analyzing degraded DNA samples due to short amplicon potential.

Purpose of the Study:

• To provide a comprehensive review of the current state of SNP genotyping technologies for forensic applications.
• To compare the advantages and disadvantages of various SNP genotyping chemistries and platforms.
• To assist forensic researchers in selecting the most suitable technologies for their specific requirements.

Main Methods:

• Review of existing literature on SNP genotyping methods, chemistries, and platforms.
• Analysis of the strengths and weaknesses of different technologies in the context of forensic casework.
• Categorization of technologies based on forensic requirements such as sample type and data quality.

Main Results:

• Identification of diverse SNP genotyping technologies currently available.
• Evaluation of the performance characteristics, including accuracy and efficiency, of different methods.
• Discussion of the applicability of various platforms for specific forensic challenges like degraded samples.

Conclusions:

• SNP genotyping technologies are rapidly evolving, offering powerful tools for forensic investigations.
• The selection of an appropriate SNP genotyping technology depends on specific forensic needs and sample characteristics.
• Continued advancements in SNP genotyping are crucial for enhancing forensic DNA analysis capabilities.