Tatchell K, Chaleff D T, DeFeo-Jones D, Scolnick E M
Nature. 1984;309(5968):523-7. doi: 10.1038/309523a0.
Cells of the yeast, Saccharomyces cerevisiae, containing disruptions of either of two genes that are members of the ras oncogene family are viable, but haploid yeast spores carrying disruptions of both genes fail to grow.
酿酒酵母细胞中,ras癌基因家族的两个成员基因中的任何一个发生破坏后仍可存活,但两个基因都发生破坏的单倍体酵母孢子无法生长。