Malone R E, Chattoraj D K
Mol Gen Genet. 1975 Dec 30;143(1):35-41. doi: 10.1007/BF00269418.
Lambda red- gam- makes a small plaque on P2 lysogens (the partial Spi- phenotype). It has been proposed that inactivation of an additional gene delta, mapping in the recombination region, makes the plaque bigger (the full Spi- phenotype) (Zissler et al., 1917b). The present paper demonstrates that the Chi mutation in lambda (Stahl et al., 1975) confers upon red- gam- phage the full Spi- phenotype and that the deletion of the region of the chromosome attributed to delta does not. It appears unnecessary to invoke a gene delta in the Spi- phenotype.
λ red⁻ gam⁻ 在 P2 溶原菌上形成小噬菌斑（部分 Spi⁻ 表型）。有观点认为，位于重组区域的另一个基因δ失活会使噬菌斑变大（完全 Spi⁻ 表型）（齐斯勒等人，1977b）。本文证明，λ中的 Chi 突变（斯塔尔等人，1975）赋予 red⁻ gam⁻ 噬菌体完全 Spi⁻ 表型，而染色体上归因于δ的区域缺失则不会。似乎没有必要在 Spi⁻ 表型中引入基因δ。 （注：原文中“1917b”可能有误，推测应为“1977b”进行翻译）
