Luigi Luca Cavalli-Sforza Testimonial
noting some of Esther Lederberg's achievements
(insufficiently accredited to her)
page 3
Replica plating that demonstrates spontaneous mutation that can be selected
F: first bacterial episome (for fertility) to be isolated
λ phage can "cross over" and thus be inherited, and is capable of transduction
Streptomycin resistance as a suppressor
Phase variation in Salmonella
This letter by Luigi Luca Cavalli-Sforza was intended to support Esther's continued employment
as a researcher at Stanford, as she was untenured. The letter has an unintended patronizing
tone, which was for this time period probably unconscious gender discrimination.