RT Journal Article SR Electronic T1 MUTATIONAL ANALYSIS OF NATURAL ALLELES AT THE B INCOMPATIBILITY FACTOR OF SCHIZOPHYLLUM COMMUNE: α2 AND β6 JF Genetics JO Genetics FD Genetics Society of America SP 507 OP 516 VO 83 IS 3 A1 Raudaskoski, Marjatta A1 Stamberg, Judith A1 Bawnik, Nurit A1 Koltin, Y. YR 1976 UL http://www.genetics.org/content/83/3/507.abstract AB The B incompatibility factor of the fungus Schizophyllum commune having allelic specificity α2–β6 was subjected to mutagenesis by X-irradiation. Five types of mutations were recovered, four of them new types previously unreported. All lead to loss of the B-factor regulatory function; three of the five have retained their allelic specificity. The mutations map in three closely linked sites: Bα, Bβ, and between Bα and Bβ.