Fig. 7.

Model of zebrafish Class I gene distribution among six haplotypes. The specific order of the genes for haplotypes C through F is presently unknown, but MHC genes associated with each haplotype are presented in the context of known linked gene polymorphisms in psmb8 and zbtb22b that distinguish these haplotypes from one another and from haplotypes A and B. Specific polymorphisms are illustrated within each allele relative to the haplotype B reference sequence. For haplotype D the divergent psmb8f allele is depicted with cross-hatches. An unknown Class I gene associated with haplotype E is also indicated