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If a parent yeast is of mating type a, what will be the mating type of its bud?(a) a(b) alpha(c) rho(d) a-alphaThe question was posed to me in examination.Origin of the question is Transcription in Eukaryotes : Gene Silencing at Telomere topic in chapter Gene Expression : Transcription Prokaryotes of Cytogenetics

Answer»

Right answer is (b) ALPHA

Explanation: In yeast mating TYPE alternates with every GENERATION, so if a parent is ‘a’ then bud will be ‘alpha’ and VICE versa. Yeast with a-alpha mating type is sterile while there is no rho mating type of yeast.



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