On one of the formulae proposed for interpreting transduction data

Abstract

The paper on the analysis of data from transduction experiments with Salmonella typhimurium, which was published in Genetical Research (Dawson, 1963), unfortunately contained an error on p. 419. In calculating the limiting values X/Y, the formulae for d and d′ are correctly stated, but their solutions are transposed. The last and third last lines on p. 419 should therefore be interchanged. In the arithmetic example on pp. 420 and 421, a similar interchange of the calculations of d and d′ is necessary. The maximum value of a/b is then:and the calculation of the minimum value should be:These values of 2·20 and 1·23 are to be compared with the values of 2·23 and 1·24 in the published paper.