Emotional expressions on the face are hereditary

According to Israeli biologists, most facial expressions like anger, are hereditary. Nerves and facial muscles can be controlled by genes passed from one generation to another to help parents easily identify children.

Singer Ray, blind but very expressive
(Photo: HTV)

Israeli researchers led by the evolutionary expert Eviatar Nevo of Haifa University observed 21 congenital blinds and 30 relatives of these people. They analyzed the similarities in facial expressions on their faces such as concentration, sadness, anger, boredom or surprise.

The researchers noted that these people had 60 to 80% of the same traits in emotional expressions, especially when expressing anger.

' We had the first authentic evidence of evolution theory published by Darwinist 130 years ago, ' Nevo said. He explained that, when the baby was hungry or cold, he cried and grimaced in anger. If the mother realizes herself in these grim lines, she is better able to meet her needs.

The study could lead to breakthroughs in treating mental disorders with facial abnormalities, such as autism or Down syndrome.

Previous studies have compared facial expression in monozygous and homozygous twins and detected identical genes in emotional expression. However, according to Nevo, using blind people is more convincing because these people do not learn to read emotional expressions on the faces of loved ones with touch.

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