Table I . See FGSC stock list for allele numbers of markers. As a result of the heterozygous inversion, mating type shows little or no recombination with markers throughout two-thirds of I, which is the longest linkage group. Replacing pdx with psi means that only two media are required. As with the other testers, unmapped translocations can be recognized by linkage between markers that are normally independent.
Growth is flat on the surface, with scattered specks of conidiation.
Carotenoids are absent in mycelia, though not in conidia. Germinants are incubated until conidia become orange, preferably under illumination. Carotenoids in ylo-1 look orange at first, then become yellow. If linkage is apparent, the remaining markers need not be tested. If the unmapped mutant is unlinked to a visible marker, the markers that require transfer are then tested serially until linkage is seen.