The Green Monster method enables the rapid assembly of multiple deletions marked with a reporter gene encoding green fluorescent protein. This method is based on driving yeast strains through repeated cycles of sexual assortment of deletions and fluorescence-based enrichment of cells carrying more deletions.
Suzuki, Y., Stam, J., Novotny, M., Yachie, N., Lasken, R. S., Roth, F. P. The Green Monster Process for the Generation of Yeast Strains Carrying Multiple Gene Deletions. J. Vis. Exp. (70), e4072, doi:10.3791/4072 (2012).