Question

‘Whi’ is the mutant of __________

(a) S. cerevisiae

(b) S. pombe

(c) S. pastorianus

(d) S. boulardii

The question was posed to me in examination.

This interesting question is from Brewing Yeast topic in section Brewing Yeast of Fermentation Technology

Answer 1

Correct answer is (a) S. cerevisiae

To elaborate: ‘Whi’ is the mutant of Saccharomyces cerevisiae. The mutants of Saccharomyces pombe is called as ‘wee’. Wee and Whi start budding at only half the cell size of wild type cells. Because of their small size, they are named as ‘wee’ and ‘whi’.