ChallengesofGenetictestingofInherited(遗传性)retinal(视网膜的)dystrophy(营养不良)include:()
A. Theclinicaldiagnosismayormaynotbespecific
B. Theinheritancemodeisnotclearfortheisolatedcases
C. Theprogression(进展)ofconditioncantakeseveraldecades
D. Locusheterogeneity(位点差异性)