Context: Sexual orientation is argued as a concept that evolved in the industrialized West, and there is a controversy as to the universality of its application in other societies or cultures. Non-westernized concepts of male sexuality differ essentially from the way sexuality is seen and classified under the Western system of sexual orientation.[unreliable source?] The validity of the notion of sexual orientation as defined in the West, as a biological phenomenon rather than a social construction specific to a region and period, has also been questioned within the industrialized Western society).

Question: What is the notion of sexual orientation in west defined as?

Answer: as a biological phenomenon rather than a social construction specific to a region and period