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Mating type gene

Mating type gene

genes that, in saccharomyces cerevisiae specify into which of the two mating types (a and _) a particular cell falls. Only unlike mating type haploids will fuse. The interest derives from the way in which mating type is switched, the existing gene is removed and a new gene, derived from a (silent) master copy elsewhere in the genome is spliced in. Later this gene will in its turn be replaced by a new copy of the old gene, also derived from a silent master. The a and _ genes code for pheromones that affect cells of the opposite mating type. Similar mating type genes are known from other yeasts and the switching mechanism (cassette mechanism) may be used more generally.


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mRNA transcripts, cis/trans-acting questions

... All of the mutants fail to transcribe the GAL2 gene, which encodes the enzyme for the first step ... haploid, but the diploid cells resulting from mating can persist as diploid colonies until induced ... induction.) When you test different genotypes and different partial diploids using F’ strains, ...

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by animus31
Fri Nov 09, 2012 11:58 am
 
Forum: Genetics
Topic: mRNA transcripts, cis/trans-acting questions
Replies: 0
Views: 1707

Theories - Origin of Life

... number, changes in behaviour (for example, mating rituals), enzymatic changes in the reproductive ... it's existence, regardless of how rapid its generation time may be. Segmentation is perhaps ... have previously stated) it must be a different type of mutation. I have addressed this above – ...

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by AstraSequi
Tue Mar 27, 2012 2:32 am
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 559
Views: 755633

Theories - Origin of Life

... there are a couple hundred variants of this gene. Another mutation in that same location on ... the protein changes, causing the observed phenotype. What exactly are you arguing? That the change ... genetic drift, migration, non-random mating and mutation. But given enough time, natural ...

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by Luxorien
Sat Mar 10, 2012 5:03 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 559
Views: 755633

Genetics Crosses

... have two strains of Chlamydomonas. One is mt+ mating type, is sensitive to Drug A and resistant to Drugs B and ... sensitivity/resistance to Drug B is due to a nuclear gene 10 map units away from the mating type gene (mt), sensitivity/resistance ...

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by Steven7373
Wed Oct 05, 2011 8:53 pm
 
Forum: Genetics
Topic: Genetics Crosses
Replies: 0
Views: 2570

Re: Yeast Mating Type Switching

... produce progeny differing in their patterns of gene expression are key to the development of multicellular ... mother cells but not daughter cells can switch mating type because they selectively express the HO endonuclease ...

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by fiona1985
Mon Aug 15, 2011 10:30 am
 
Forum: Cell Biology
Topic: Yeast Mating Type Switching
Replies: 3
Views: 5579
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