The Inheritance of the Petite Phenotype in Saccharomyces Cerevisiae Is

question 10

Multiple Choice

The inheritance of the petite phenotype in Saccharomyces cerevisiae is complicated by an interaction of mitochondrial and nuclear genes.Which of the following is a false statement about petites in S.cerevisiae?

• A)Both nuclear and cytoplasmic mitochondrial genes contribute to the petite phenotype in some cases.
• B)Suppressive petites are characterized by mitochondria lacking most of its DNA.
• C)Segregational petites are characterized by mutations in the nuclear genome.
• D)Neutral petites,when crossed to wild type,yield wild- type mitochondrial function.
• E)The three categories of petites are segregational,neutral,and suppressive.

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