👉 In biology, coalescence is a process where two or more species of organisms merge into one. It occurs when two different populations of an organism evolve from their respective populations and reproduce together. For example, suppose two species of plants have evolved to grow in similar environments but are separated by a river. Over time, the two species may have hybridized with each other's pollen or spores, leading to the formation of new species that can thrive in different habitats. In this scenario, coales
