Heritability and correlation of lip print, palm print, fingerprint pattern and blood group in twin population

Abstract

Background: Twins are similar in many ways owing to the genetical and environmental factors. However, still, there are certain things that are not similar among them, and this is the challenge for personal identification among the twins. Objectives: Our present study aimed to know and assess the similarities and differences present between the monozygotic (identical) and dizygotic (fraternal) twins in relation to lip prints, palm prints, fingerprints and blood group and to evaluate their heritability among parents and their offspring. Materials and Methods: The study group comprised 30 twins and their parents – 15 identical and 15 nonidentical twins. The age of twins ranged from 15 years to 40 years. Lip print, palm print, fingerprint and blood group were statistically analyzed. Results: All the data were subjected to statistical analysis. The identical twins showed more percentage of similarities in comparison to the non identical twins. The inheritance pattern was significant for twins in case of their lip prints while palm prints and finger prints showed no such significance in inheritance pattern whereas there was significant association seen in case of blood groups of identical twins and their parents. Conclusion: Lip prints, palm prints, fingerprints and blood groups are the important parameters in forensic science for individual identification. Many studies have been done till now in individual but very few studies done in twin population. To the best of knowledge, ours is the first study of its kind with multiple parameters and its heritability in twins. We have observed that heritability in twins with relation to lip print was statistically significant and all the parameters can be used independently to identify the twins.

Patterns of Lip Print and Fingerprint in Gender Identification: A Cross-sectional Study

“…6,7 Dermatoglyphics is the scientific study of epidermal ridges and their configuration on the volar aspect of the palmar and plantar regions. 8 The palmar surfaces of hands have friction ridges known as papillary or epidermal ridges. The establishment of these epidermal ridges takes place from the 10 th to 16 th weeks of development.…”

A description of lip print pattern and lip shapes in children’s and their parents among Abbottabad population in KPK, Pakistan.

“…Biological babies constitute a peculiarity inherent to cheiloscopy. 17,18,19 The data of the present study also proved very helpful to see if there is any correlation of the lip print types with gender. There are several studies available that showed the relationship of type II lip print either with male or female while other studies showed the lip print type IV as most common in both sexes.…”

Are lip prints hereditary? A systematic review

“…In the study by Venkatesh and David [ 5 ], the highest bias risk was assigned, because only one characteristic of the participants was mentioned. In the domain referring to methodology, the use of the modified S&T classification, considered not fully valid, contributed to the attribution of the medium bias risk in two studies [ 15 , 20 ]. In domains 5 and 6, most articles did not mention if any strategy was used to evaluate inter- and intra-rater reliability.…”

“…At the lowest level of bias risk are the last two studies. In the study by Debta et al, a statistically significant association was found between lip prints of monozygotic twins and those of their parents ( p = 0.02) as well as between lip prints of dizygotic twins and those of their parents ( p = 0.03), indicating the existence of heredity according to the authors [ 20 ]. In the study by Loganadan et al, 53.33% of the children’s prints showed similarities to their fathers’ lip prints and 73.33% to their mothers’ prints.…”

“…Human lips are naturally mobile [29]; therefore, the pattern of lip wrinkles depends on how the muscle relaxes to produce the print [1]. To overcome this limitation and to avoid errors in the analysis, some researchers have used the photography technique to record lip prints instead of the traditional lipstick and paper recording method [13,20]. Photography has been suggested as the most appropriate method for taking lip prints [20,35].…”