The term ‘chiasma’ refers to a point of intersection or crossing, particularly in the context of biology and genetics. In genetics, it specifically describes the crossover point between two homologous chromosomes during meiosis, where genetic material is exchanged. In a broader sense, ‘chiasma’ can also refer to any X-shaped structure or arrangement in various fields, such as anatomy, where it may describe the crossing of nerve fibers in the brain, like the optic chiasm.
