“Genetic Portraits” is a series by Canadian photographer Ulric Collette in which he blends the portraits of two members of the same family into a single face.
While doing “an image a day” type of project Urlic tried to age his son in Photoshop an accidentally ended up creating his first genetic portrait. It was made by splicing together photographs of himself and his son.
It’s interesting to see the similarities and differences among people who share DNA — especially when there’s identical twins. link