THE MORPHOLOGY AND GENETICS OF WILD-TYPE AND SEVEN MORPHOLOGICAL MUTANT STRAINS OF NEUROSPORA CRASSA

Abstract

Comparisons of morphological mutant strains of Neurospora crassa with the wild type and with each other reveal differences in: (a) the general form of the colonies, resulting from different relative growth rates of the aerial submerged and surface mycelia; (b) the frequency of hyphal branching; (c) the abundance of conidia; (d) the compactness of the mycelia; and (e) various characteristics of the hyphae. The typical variant properties of each mutant strain depend upon the activity of some single mutant gene. The linkage position of six of the mutant genes is reported.