sentences:  Jung's exposition of the collective unconscious builds on the classic issue in psychology and biology regarding nature versus nurture.If we accept that nature, or heredity, has some influence on the individual psyche, we must examine the question of how this influence takes hold in the real world.On exactly one night in its entire lifetime, the yucca moth discovers pollen in the opened flowers of the yucca plant, forms some into a pellet, and then transports this pellet, with one of its eggs, to the pistil of another yucca plant.