In the Holliday model of homologous recombination, after crossing over occurs, cleavage and rejoining reestablish two separate chromosomes. These processes results in

dz nuts.   eeneneneeenenne

thinking it would be d not too sure but i think it's right

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]