منابع مشابه
Repair-resistant mutation in Neurospora.
Chronic UV treatment produces severalfold fewer mutations in Neurospora conidia than does the same total dose of acute UV. Experiments were designed to determine the conditions required for chronic UV mutagenesis. Measurement of the coincidence frequency for two independent mutations revealed the existence of a subset of cells which are mutable by chronic UV. Analysis of forward mutation at the...
متن کاملA pericentric inversion in Neurospora, with unstable duplication progeny.
URING a study of the arginine-1 locus in Neurospora crmsa, one mutant strain (H4250) was found to produce, on crossing to wild type, an unusual class of progeny. These progeny initially show very slow “inhibited” growth with a characteristic spidery morphology, and are darkly pigmented on complete medium; they are therefore called Dark Agars. After several days, they escape from the inhibition ...
متن کاملAn unstable allele of the am locus of Neurospora crassa.
The mutant strain am126 was isolated, using the direct selection procedure, after nitrous acid mutagenesis. It produced neither measurable NADP-dependent glutamate dehydrogenase (GDH) nor immunologically cross-reacting material. That the am126 strain produced some form of GDH product was shown by the fact that it complemented several other am mutant strains. The GDH formed by complementation be...
متن کاملThe effect of photoreactivation on mutation frequency in Neurospora.
Kelner (1949a) first reported that mutations to phage resistance induced in Escherichia coli by ultraviolet light could be reversed by immediate irradiation with white light. In addition he noted that end-point mutations in contrast to zero-point mutations were not reversed by visible light (1949b). At the same time Novick and Szilard (1949) reported that light-reactivation of E. coli reduced t...
متن کاملMutation and evolution of microsatellite loci in Neurospora.
The patterns of mutation and evolution at 13 microsatellite loci were studied in the filamentous fungal genus Neurospora. First, a detailed investigation was performed on five microsatellite loci by sequencing each microsatellite, together with its nonrepetitive flanking regions, from a set of 147 individuals from eight species of Neurospora. To elucidate the genealogical relationships among mi...
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ژورنال
عنوان ژورنال: Heredity
سال: 1965
ISSN: 0018-067X,1365-2540
DOI: 10.1038/hdy.1965.15