True about MHC -: (A) Present on chromosome 4, (B) Class II compromises A, B, C loci, (C) Class III has complement, (D) Class I is involved in mixed leucocyte reaction
Answer is C. MHC class III genes encode several components of the complement system (i.e. C2, C4a, C4b, Bf), they are responsible for the levels of components of compliment system. Reff: Ananthanarayan & Panikers textbook of microbiology 9th edition pg: 140