ALLELE SPECIFIC DETERMINANTS OF HOMOTHALLISM IN SACCHAROMYCES LACTIS
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چکیده
منابع مشابه
Allele specific determinants of homothallism in Saccharomyces lactis.
N general, fertile yeasts are classified as being either heterothallic or homo’ thallic. Heterothallic strains exhibit one of two alternate mating types (usually designated as a and a! or + and -) with diploidization occurring between cells of opposite mating type only (e.g. a with a! and + with -) . In homothallic yeasts, on the other hand, restrictive mating systems are not observed and siste...
متن کاملThe genetic system controlling homothallism in Saccharomyces yeasts.
There are four types of life cycles in Saccharomyces cerevisiae and its related species. A perfect homothallic life cycle (the Ho type) is observed in the classic D strain. Two other types show semi-homothallism; one of them shows a 2-homothallic diploid:2alpha heterothallic haploid segregation (the Hp type) and another, a 2-homothallic:2a segregation (the Hq type). In the segregants from these...
متن کاملMating types in Saccharomyces: their convertibility and homothallism.
GENETIC systems controlling homothallism uersus heterothallism in Saccharomyces yeasts have been reported by several authors ( WINGE and ROBERTS 1949; TAKAHASHI 1958; HERMAN and ROMAN 1966; TAKANO and OSHIMA 1967). Allelism tests indicated that all the homothallism gene systems in S. cereuisiae and its related species are the same (TAKANO and OSHIMA 1970a). The controlling system in these strai...
متن کاملApplication of Allele Specific Markers in Determining Alleles at VRN-1 Loci in Bread Wheat Genotypes
Wheat is the most important crop and is cultivated all over the world. Wheat has a wide range of adaptability to different climates. Vernalization genes are one of the important factors determining wheat adaptability. in wheat breeding program understanding the alleles at vernalization requirement gens are useful to introduce new cultivar for different climates. At the molecular level, the ...
متن کاملPrecise mapping of the homothallism genes HML and HMR in Saccharomyces cerevisiae.
The HML and HMR loci carry unexpressed copies of MATa and MAT alpha information, and a replica of that information is transposed to MAT during mating-type interchange in Saccharomyces yeasts. A negative control mechanism keeps silent the information located at the HML and HMR loci. We mapped these loci by constructing strains in which these loci are expressed. In these strains, the mating type ...
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ژورنال
عنوان ژورنال: Genetics
سال: 1966
ISSN: 1943-2631
DOI: 10.1093/genetics/53.4.727