Namjin Chung wrote:
> Since yeast cells can change their mating types between a and alpha by
> HO, I wonder how we can specify a genotype as MAT a or alpha because,
> for example, cells could have a type after divisions even though you
> started with alpha type.
For the reasons you give, most yeast people use lab strains that are
ho-. In fact, HO+ strains are diploid much of the time.
Charlie Brenner
