| Author | Message | ||
     Webservant |
Loop. | ||
| Eryn |
What is the most common type of fingerprint in the United States of America? | ||
| Student |
this may seem like a stupid question, but here goes... i understand that fingerprints are unique to everyone, so is this attribute the reason why fingerprinting has been accepted as a very unique way of identifying people? or, critically speaking, are there other reasons of fingerprinting that make it so simple and effective? could u by chance direct me to some case studies or reports also, that help me with my query...? thanks so much!! | ||
| todd moran |
Why are finger prints different and unique in everyone (even twins)? | ||
| Ernie Hamm |
Galen, Here are two sources of information: "The Genetics of Dermal Ridges", Sarah B. Holt, Charles C. Thomas, Springfield, 1968 "Finger Prints, Palms and Soles", Harold Cummins and Charles Midlo, Dover Publications, New York, 1961 | ||
| Duncan Brown |
Galen, Sorry, can't help you on the first question, but on your second question, by far the most common fingerprint pattern is the loop. The most common direction for loops is downwards to the right on the right hand (as viewed on a ten-print card) and to the left on the left hand (again, as viewed on a ten-print card). If the patterns are viewed directly on the hand, these directions are reversed. The second most common pattern type is the whorl. These are based on European ethnic type. Other ethnic groups may display different variations. Hope this helps Duncan Brown, Instructor National Training Centre for Scientific Support to Crime Investigation, Durham, UK | ||
| Galen Wethey |
I am doing a science fair project on genetic changes in fingerprinting. I have two questions: 1) Have there been any studies on the genetic transfer of fingerprints? 2) Is there one type of fingerprint that is more common than others? Is there one pattern that is more dominant? | ||
| Webmaster |
In addition to standards set by SWGFAST, the IAI, and other organizations and agencies, the below fingerprint identification standard is universally embraced by fingerprint experts. The wording varies (matching instead of corresponding, points instead of detail, etc.), but the basic tenet is taught and accepted among fingerprint experts worldwide: Friction ridge detail present in two impressions must correspond without any unexplainable dissimilarities to effect an identification. | ||
| David Fairhurst |
Okay lets have a go at this one. Your first question is relatively easy to answer. Uniqueness and permanence are the two premises that the science of fingerprint identification is based upon. These premises are summaries of masses of research in many different sciences like anatomy, embryology, histology, ect that apply to fingerprints. The premise of 'Uniqueness' is that all friction ridge formations, even those of a very small part of the skin, are unique and are never repeated. The premise of 'Permanence' is that the friction ridges on your hands and feet are formed and fixed before birth and persist without changing, except through deep seated injury or pathological condition, throughout life. While injury of the basal layer of the epidermis and some pathological conditions such as leprosy may change friction ridge configuration, once the injury is healed or the disease is gone the ridges will once again be fixed. Although now changed the formations are still unique. For more detailed descriptions see the FAQ at this site at: http://onin.com/fp/lpfaq.html#q1 Your question about set standards for fingerprint examiners is more difficult to answer. Mainly because I don't really know what you are getting at. If you would like to elaborate a little I will be pleased to try to answer. I am assuming that this is part of your studies. If so 'Good Luck!' and I hope you consider a career on fingerprints. David @:^) | ||
| student |
What is the uniqueness and permanence of the fingerpring? Will there be a set standard for the fingerprint examiner? |
