Key Takeaways & Executive Findings
- •• Loops are the most prevalent fingerprint pattern in the Chinese population, followed by whorls and arches. • Sex differences exist in fingerprint pattern distribution, with females exhibiting a higher frequency of arches. • Several genetic loci show suggestive associations with fingerprint patterns, implicating genes involved in limb development. • Fingerprint patterns exhibit moderate heritability, supporting a genetic basis for dermatoglyphic traits.
Abstract
Fingerprint patterns are complex quantitative traits that have been used for personal identification and are hypothesized to be influenced by genetic factors. In this study, we conducted a comprehensive analysis of fingerprint patterns in a large Chinese cohort, examining the distribution of arch, loop, and whorl patterns across digits and hands. We further investigated the association between fingerprint patterns and genetic markers, including single nucleotide polymorphisms (SNPs) in genes related to limb development and dermatoglyphics. Our results reveal significant differences in fingerprint pattern frequencies between males and females, with loops being the most common pattern overall. We identified several SNPs that show suggestive associations with specific fingerprint patterns, although none reached genome-wide significance. Additionally, we explored the heritability of fingerprint patterns using family-based data, estimating moderate heritability for whorl patterns. Our findings provide a foundation for future genetic studies of dermatoglyphics and may have implications for understanding the developmental biology of fingerprint formation.
1. Introduction
Fingerprints, also known as dermatoglyphics, are unique patterns formed by ridges on the fingertips. They are classified into three main types: arches, loops, and whorls. These patterns are determined during fetal development and remain unchanged throughout life, making them valuable for personal identification and forensic science. Beyond their practical applications, fingerprint patterns have been studied as model traits for understanding the genetic and environmental factors that influence complex morphological features.
Previous studies have suggested that fingerprint patterns are heritable, with estimates of heritability ranging from 0.5 to 0.9. However, the specific genetic variants underlying these patterns remain largely unknown. Advances in genotyping and statistical methods have enabled genome-wide association studies (GWAS) to identify loci associated with various traits. In this study, we aimed to characterize fingerprint patterns in a large Chinese cohort and investigate their association with genetic markers, providing insights into the genetic architecture of dermatoglyphics.
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ZHANG Wei, LI Ming, WANG Fang, LIU Yang, CHEN Jing, ZHAO Lei, SUN Qian, ZHOU Hong (2026). Comprehensive Analysis of Fingerprint Patterns and Their Association with Genetic Markers in a Chinese Population. Chinese Journal of New Drugs. https://doi.org/pub_80__articleID_540
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Frequently Asked Questions
What are the main types of fingerprint patterns?
The three main types of fingerprint patterns are arches, loops, and whorls. Loops are the most common, occurring in about 60-70% of the population, followed by whorls (25-35%) and arches (5-10%).
Are fingerprint patterns inherited?
Yes, fingerprint patterns are heritable. Studies have estimated heritability to be moderate to high, indicating a significant genetic component. However, the exact genes involved are not fully understood.
Can fingerprint patterns be used for personal identification?
Yes, fingerprints are unique to each individual, even identical twins have different fingerprints. This uniqueness makes them reliable for personal identification in forensic and security applications.
What is the significance of studying fingerprint patterns in genetics?
Studying fingerprint patterns helps researchers understand the genetic and developmental mechanisms that shape complex traits. It can also provide insights into evolutionary biology and the genetics of other morphological features.
Are there sex differences in fingerprint patterns?
Yes, some studies have found sex differences in the distribution of fingerprint patterns. For example, females tend to have a higher frequency of arches, while males may have more whorls, though these differences can vary across populations.
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