how is this character associated with forensic science?
No, It is a detective fiction.
Sherlock Holmes
Although Holmes is not the original fictional detective, his name has become synonymous with the role. Doyle's Sherlock Holmes stories introduced multiple literary devices that have become major conventions in detective fiction, such as the companion character who is not as clever as the detective and has solutions explained to him (thus informing the reader as well), as with Dr. Watson in the Holmes stories. Other conventions introduced by Doyle include the arch-criminal who is too clever for the official police to defeat, like Holmes's adversary Professor Moriarty, and the use of forensic science to solve cases.

The Sherlock Holmes stories established crime fiction as a respectable genre popular with readers of all backgrounds, and Doyle's success inspired many contemporary detective stories. Holmes influenced the creation of other "eccentric gentleman detective" characters, like Agatha Christie's fictional detective Hercule Poirot, introduced in 1920. Holmes also inspired a number 
who portrayed watson in the recent bbc show 'sherlock Martin Freeman. when was it initially aired? 1st January 2016. what is the series about? It is a British crime television series based on Sir Arthur Conan Doyle's Sherlock Holmes detective stories. who are the other characters in the series? Sherlock Holmes, Doctor John Watson. who did the soundtrack for the series? The  theme and incidental music were composed by David Arnold and Michael Price. what can you tell me about the former? He is an English film composer. what response did the series receive? The three episodes of series two were the three most watched programmes on iPlayer, the BBC's video-on-demand service, It received disapproval due to adult-orientated content. what are the various disguises of the protagonist? UNANSWERABLE where did the writer get inspiration for this character? Holmes was inspired by the real-life figure of Joseph Bell, a surgeon at the Royal Infirmary of Edinburgh.
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Sherlock Holmes [SEP] The detective story
Although Holmes is not the original fictional detective, his name has become synonymous with the role. Doyle's Sherlock Holmes stories introduced multiple literary devices that have become major conventions in detective fiction, such as the companion character who is not as clever as the detective and has solutions explained to him (thus informing the reader as well), as with Dr. Watson in the Holmes stories. Other conventions introduced by Doyle include the arch-criminal who is too clever for the official police to defeat, like Holmes's adversary Professor Moriarty, and the use of forensic science to solve cases. The Sherlock Holmes stories established crime fiction as a respectable genre popular with readers of all backgrounds, and Doyle's success inspired many contemporary detective stories.