Ulric Collette is a French-Canadian photographer who did Genetic Portraits where he photographs family members and then cuts them side by side to create one portrait. The end result makes you notice the similarities between the people photographed:  

(Daughter/Mother: Marie-Pier, 18 & N’sira, 49)

(Sisters: Anne-Sophie, 19 & Pascale, 16)

(Twins: Alex & Sandrine, 20)

(Mother/Daughter: Julie, 61 & Isabelle, 32)

(Daughter/Father: Amélie, 33 & Daniel, 60)

(Father/Daughter: Daniel, 60 & Isabelle, 32)

(Mother/Daughter: Francine, 56 & Catherine, 23)

(Sister/Brother: Karine, 29 & Dany, 25)

(Cousins: Justine, 29 & Ulric, 29)

(Father/Son: Laval, 56 & Vincent, 29)

(Twins: Laurence & Christine, 20)

(Father/Son: Denis, 60 & Mathieu, 25)

(Brothers: Christophe, 30 & Ulric, 29)

You can take a look at more of Ulric Colete‘s work. I have found this pictures at FULLYM by Meredith Taylor.