Not even Shlomo Sand asserts that most Jews share no DNA with their co-religionists (Daniel Teegan, Letters, February 7) since that would mean that the majority of individuals of that faith are a hitherto undiscovered species. Humans share 99.9% of DNA with all other human beings.

Alan Furst

THE ENEMIES of Reason, a TV series by Richard Dawkins, is being shown by Channel 4.