Board Thread:Clubs/@comment-174.2.24.208-20190531012445/@comment-36247755-20190702155733

It is a small slice of evolution, but it is evolution all the same. Changes like those build up over time, and the species as a whole changes.

https://www.npr.org/sections/thesalt/2012/12/27/168144785/an-evolutionary-whodunit-how-did-humans-develop-lactose-tolerance

They are all over the earth. You could probably even find examples in the Grand Canyon (if they haven't already been found and put in a museum). One example is this below, which is the transition from sea animals to land animals (one of the most important ones).

https://www.nytimes.com/2006/04/06/science/06fossil.html