[Solved] A patient with Klinefelter syndrome has the following chromosomal complement A) XY B) XXY C) XYY D) XXX E) X0 Instinct: An innate, typically fixed pattern of behavior in animals in response to certain stimuli. Evolutionary Psychology: A theoretical approach in the social and natural sciences that examines psychological structure from a modern evolutionary perspective, focusing on how evolutionary principles such as natural selection influence the development of adaptive psychological traits. Genes Predispose: The genetic factors that increase the likelihood of developing certain diseases or characteristics. Motivation: The method that starts, directs, and sustains actions aimed at achieving specific goals.