One of the first questions one may ask for such an article can be: What is a yeti? According to this article, a yeti is a heavy beast (somewhere between 200-400 lbs, covered with grayish/reddish-brown hair). In the past, this beast has been identified on account of footprints in the snow, hair strand discoveries, or fuzzy sightings. Along with this, another sign of the yeti came from the discovery of a finger (potentially from a Buddhist monastery in the 1950s).
A particular finger, the origination of which constitutes the main content of this article, was discovered to be once revered in a monastery in Nepal and taken by a Bigfoot researcher. After decades, it turns out that this finger is just a regular human finger, albeit one with a very interesting history. This finger has been in London for over half a century. After much controversy between Bigfoot and yeti believers, researchers finally analyzed the finger and discovered that its DNA is actually human rather than that of a Yeti (due to matching with a sequence database).
While this finding definitely discredits the original theory of this finger being from a yeti, this is not the first time that a yeti claim has been debunked. Back in 1960, Sir Edmund Hillary (the first man who has scaled Mount Everest) discovered a "scalp" which, rather than coming from a yeti, was actually belonging to another animal.