On November 11, 2021, the University of Iowa announced that its Department of Biology scientists discovered a new type of genetic variation in yeast that can improve the production of ethanol. According to the study conducted by the University’s biologists, yeast strains with certain alleles of gene MED15 are more efficient at fermentation. The study was led by Professor Jan Fassler, who states that these findings may assist scientists in engineering a better yeast strain to produce more efficiently bioethanol for fuel and wine.