QUESTIONS

Q : The Dad’s Army script has the men carrying ‘.300 calibre Ross rifles’. Is this historically accurate? What is known of these weapons? Peter Smith, Durham. Q : Why is a failing business said to have ‘gone to the wall’? Ed Parsons, Aberystwyth, Ceredigion. Q : Scientists claim that all the computer data produced last year could be stored on four grams of DNA. What do they mean by this? Adrian Bonnington, Northampton.