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Fingerprints tell about nationality

11.10.2015

Fingerprints are unique to each person, which is why they are one of the most effective means of identification. A recent study found that fingerprints also reveal a person's lineage.

Forensic experts and anthropologists study fingerprints, using different methods and without combining their findings. Anthropology focuses on drawings of the papillary pattern (the so-called "first-level details"), while forensic science focuses on details of the second and third levels: the ends of papillary lines, their branches and intersections.

As part of the new scientific work done by American specialists, both methods are taken into account. Anthropologists from Washington State University and North Carolina State University studied the fingerprints of 243 people, both men and women of African American and European ancestry, looking at them at all three levels at once. There were no significant differences between the prints of men and women; however, when comparing samples of all ethnic groups, the difference was noticeable.

Thus, fingerprints can be used to establish nationality with high accuracy and trace the connection with ancestors. At the same time, anthropologists managed to identify all the differences thanks to the forensic method. In the future, scientists plan to continue research on a larger sample of people; the discovery may be useful in anthropology to study the history of various populations.

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Character traits can be inherited 03.03.2019

Some character traits can be inherited. This is stated in a study by scientists from the University of Pennsylvania (USA).

The scientists recruited 720 pairs of siblings, including twins, blood relatives and half-relatives, to participate in the study. At the beginning of the study, the volunteers were 12-14 years old, and at the end of the study - 25-27 years old. In particular, the experts were interested in what kind of atmosphere (positive or negative) prevailed in the families of the subjects. In addition, the participants in the experiment passed psychological tests that help identify certain traits of their character.

Based on the results of the study, scientists came to the conclusion that character can be inherited. Thus, behavioral reactions can be provoked by an innate character trait, and not just upbringing.

For example, the actions of blood brothers and sisters were more similar than in the case of half-relatives, although they grew up and were brought up in the same conditions.

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