For a pure culture of Saccharomyces cerevisiae cells that were all derived from a single cell to mate,
A) a mating-type switch in one or more cells in the culture must occur.
B) both the α and the a gene must be fully expressed in the population.
C) the α gene must be fully repressed in the population.
D) some cells must exist as diploids.

Question

Quizplus · Accepted Answer

In order for a pure culture of Saccharomyces cerevisiae to mate, a mating-type switch in one or more cells in the culture must occur. This switch results in the expression of both α and a mating types, allowing for sexual reproduction to occur.

For a Pure Culture of Saccharomyces Cerevisiae Cells That Were