Meiotic chromosome segregation relies on homologous chromosomes being linked by at least one crossover. the obligate crossover. Homolog pairing. synapsis and meiosis specific DNA repair mechanisms are required for crossovers but how they are coordinated to promote the obligate crossover is not well understood. https://ashleyshomestores.shop/product-category/3-piece-king-bookcase-bed-w-storage-footboard/