Below the surface of the soil, fungi can grow over a large area by extending their hyphae. Typically, when two hyphae are touching, mating can occur. How do fungi prohibit self-fertilization when the majority of hyphae in a localized area are likely from the same individual?
A)Fungi do not prohibit self-fertilization and readily self-fertilize.
B)Each fungal individual has specific alleles that allow it to identify fungal hyphae that are not the same mating type.
C)Fungal hyphae from the same individual can combine, but will use parasexuality to generate genetic diversity.
D)Fungal individuals of the same mating type must meet in order to mate.

Question

Quizplus · Accepted Answer

Each fungal individual has specific alleles that allow it to identify fungal hyphae that are not the same mating type. This mechanism is known as heterokaryon incompatibility, which prevents fusion of genetically similar hyphae.

Below the Surface of the Soil, Fungi Can Grow Over