Morphogens are signaling molecules that play a crucial role in the development of organisms. They are distributed in a gradient, meaning their concentration varies in different areas of a developing tissue. This gradient helps cells interpret their position and decide how to differentiate into specific cell types, guiding the formation of structures during embryonic development. These molecules are essential in processes like embryogenesis and tissue regeneration. By influencing gene expression, morphogens help establish the body plan and organize the layout of organs and tissues. Examples of morphogens include Sonic Hedgehog and Bone Morphogenetic Proteins, which are vital for proper development in various organisms.