No we had civilisation instead.
Did I tell you about the morning I spent in the Forensic Laboratory in Huntingdon? Cambridgecutie picked up David and myself at the station and her bestie drove the twenty miles or so to the premises. He works on the London Stock Exchange trading in tin (or was it softs, I was in the back and only caught snippets of the conversation) and David ignored me the whole time. Linda Groombridge was there to welcome us at the entrance and once we had all donned our white uniforms and latex gloves Cambridgecutie set to work.
As we were informed, non-chain DNA is inadmissible in court. She added in the DNA chemicals and made a replica of that chain. After making a copy the copy fell off, which she assured us was quite normal and part of the process. After repeating this thirty-eight times she had enough copy to work with. Her one worry was that there would be degradation, no longer existing in their proper form. However, there was enough intact DNA to copy to form a result.
Taking a glass slide she added a few drops of the sample with a pipette, then covered the coverslip, gently pressing down to remove air bubbles. Lo and behold semen was discovered on the swab, which was sent off for DNA profiling.
David approached Linda with his forensic breakthrough on the White House Farm murders, but sadly she didn't seem overly impressed.