What is an Ab aB linkage arrangement called? O complementation O coupling linkage O repulsion linkage O linkage disequilibrium O interference Solution 1. C. Repulsion linkage linkage disequilibrium is the non-random association of alleles at different loci. 2. D. Double crossover progeny 3. b 1%= 1 map unit 4. A. Genetic linkage is the tendency of DNA sequences that are close together on a chromosome to be inherited together during the meiosis phase of sexual reproduction so it can not show indepedent assortment..