Lagers
- Group I (Saaz) lager strains are allotriploid with three sets of chromosomes, one from Saccharomyces cerevisiae and two from S. eubayanus.
- Group II (Frohberg) lager strains are allotetraploid with four sets of chromosomes, two from S. cerevisiae and two from S. eubayanus.
- Recently, classical and non-GMO methods have been used to breed novel lager hybrid strains that are distinct from the Group I and II traditional lineages 1 . These novel Group III (Renaissance) strains are allotetraploid with four sets of chromosomes, three from S. cerevisiae and one from S. eubayanus.