Figure 1. A partial linkage map of Neurospora crassa.
The discs represent the centromeres and positions are in Mbases from the left end of linkage group I. By convention, his-3 is on the right arm of LGI, am on the left arm of LGV and his-5 on the right arm of LGIV. Recombination within his-3 and crossing over between his-3 and ad-3 are regulated by rec-2 on LGV. rec-2 also regulates crossing over between his-5 and pyr-3 but has no known effect within his-5 (Smith 1966), while rec-3 regulates recombination within am with no detectable effect on crossing over in the vicinity (Smyth, 1973).
