Published online by Cambridge University Press: 14 April 2009
In their recent paper, Waddington & Robertson (1966) discuss the general importance of disruptive selection and make various points that call for comment.
First, their statement that ‘It is most desirable that Thoday's results … should be repeated, with special attention to the strict virginity of the flies used, …’ appears to some readers as a scarcely veiled imputation that my experiments, especially that of Thoday & Gibson (1962), were executed without technical competence, though Waddington has informed me such imputation was not intended.