| Cheryl Sourkes Chiasmatypy (A Supposed Twisting of Homologous Chromosomes About Each Other During One Stage of Meiosis, Resulting in a Possible Interchange of Genes, or Factors, by the Chromosomes.) 1985 (taken) 1986 (print) Gelatin silver print 50.4 x 60.4 cm (image) 50.4 x 60.4 cm (sheet) National Gallery of Canada / Musée des beaux-arts du Canada Purchased 1985, Canadian Museum of Contemporary Photography (no. EX-85-159) LL/63764
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