Question

Lifecycle of Saccharomyces cerevisiae is

• A. haplontic type
• B. diplontic type
• C. haplo diplobiontic type
• D. none of these

Answer 1

The correct option is C haplo diplobiontic type

This type of life cycle is represented by haploid and diploid phases, of more or less equal duration, found in Saccharomyces cerevisiae. The haploid cells of opposite mating type normally multiply by budding. Two such cells of opposite mating behave as gametangia and undergo fusion initially only plasmogamy takes place, wherein the nuclei exist separately also called the dikaryotic phase. Later on the nuclei undergo fusion in specialized sac like structures called the ascus to form a diploid zygote, which undergoes meiosis to release the haploid ascospores.

So, the correct answer is 'haplodiplobiontic type'