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Restoration of the appearance of a person by his DNA

03.09.2016

An international team of scientists has published the first results of a study that reveals the relationship between genome features and facial features. Criminologists expect that they will soon be able to reconstruct the appearance of a criminal using DNA left at the crime scene.

The way we look depends largely on our genes. To be convinced of this, it is enough to look at the members of the same family: they are similar, because their genomes coincide in many ways. There are a lot of studies that reveal the dependence of various facial features - for example, the length of the nose, the width of the jaw or the shape of the eyes - on specific genes. However, it has not yet been possible to completely reconstruct the external appearance from the genome.

The study describes a technique for reconstructing facial features from DNA. In order to establish patterns, scientists used 3D scans of the faces of more than 3000 adult Caucasoid people and their decoded DNA. Scientists were able to analyze almost a million point mutations.

Geneticists compared 20 different facial features (nose, forehead and chin sizes, eye fit and face width) and looked for mutations that are responsible for certain features. In some cases, they turned out to be genes responsible for embryonic development.

The study is of both scientific and practical interest. Its results made it possible to better understand the process of development of the facial organs and skull in children, some congenital defects in the development of the maxillofacial apparatus and facial organs. But criminologists were most interested in the technique. It is assumed that thanks to this technique it will be possible to restore the faces of those who left their DNA at the crime scene.

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