Our DNA determines what we look like, including our facial features. That appeals to the popular imagination, as the potential applications are obvious: But first, researchers need to figure out which genes in our DNA are responsible for specific facial characteristic. They would then look for a connection between this feature and many genes.
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Peleg et al. hope that finding a heritable basis for facial expression signatures may lead to discovering genes responsible for facial expressions. (31) showed the genetic influence on emotional modulation by using . The hereditary basis of facial expression must stem from a variety of.
Emotion is critical to most aspects of human behavior, and individual differences in systems recruited to process emotional stimuli, expressed as variation in emotionality, are characteristic of several neuropsychiatric disorders. We examine the genetic origins of individual differences in emotion processing by focusing on functional variants at five genes: These represent a range of effects of genes on emotion as well as the variety of mechanisms and factors, such as stress, that modify these effects.
Historically, craniofacial genetic research has understandably focused on identifying the causes of craniofacial anomalies and it has only been within the last 10 years, that there has been a drive to detail the biological basis of normal-range facial variation. This initiative has been facilitated by the availability of low-cost hi-resolution three-dimensional systems which have the ability to capture the facial details of thousands of individuals quickly and accurately. Simultaneous advances in genotyping technology have enabled the exploration of genetic influences on facial phenotypes, both in the present day and across human history.