![]() ![]() In this regard, the external appearances of 92 prominent buildings constructed in Tehran between 1979–2013, were examined, and their means of visual expression were analyzed. This paper addresses the status of ornamental practices in contemporary Iranian architecture, specifically after the Islamic revolution, using a descriptive–analytical method. Islami: Professor of Architecture, College of Fine Arts, University of Tehran © 1986 The Society for the Study of Evolution.The Āmeri House is a historic house in Kashan, in Isfahan Province, in Iran / Photo by Mastafameraji, Wikimedia CommonsĮxamining the status of ornamental practices in contemporary Iranian architecture.īy (left-to-right) Dr. Fatemeh Ahani, Dr. Iraj Etessam, and Dr. Seyed Gholamreza Islami / Īhani: Department of Art and Architecture, Science and Research Branch, Islamic Azad UniversityĮtessam: Department of Architecture, University College of Fine Arts, University of Tehran ![]() In practice, these and several other mechanisms of sexual selection may occur together. The evolution of mating preferences and secondary sex traits that reflect overall genotypic constitution therefore can be based solely on viability differences, no Fisherian mating advantage being required. Ornament and preference can then hitchhike slowly to high frequency with alleles that confer a slight survival advantage, provided that such alleles become available often enough. A key assumption is that ornament development depends on the phenotypic condition and overall genotype of the possessor there is evidence that secondary sex traits often mirror nutritional status and health, sometimes through hormonal mediation. ![]() The present model is based on a monogamous mating system that precludes such a mating advantage. Earlier genetic models suggested that viability-based processes alone cannot explain the evolution of mate choice and sex ornaments that reduce survival a Fisherian mating advantage seemed necessary. The possibility that the evolution of mating preferences and secondary sex traits can be based on heritable differences in viability is examined with a three-locus model. ![]()
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