Someone who knows quite a bit about evolution and the history of our planet
Genealogy is all the rage these days, and DNA testing has made tracing family lines even more expansive than it used to be. How exactly is this accomplished though? How is genetic testing able to trace family lines back centuries? That has to do entirely with how our genomes are passed down to us.
If you are from North America or have visited the Eastern United States and Canada, you are probably aware of the mountain range known as the Appalachian Mountains. The Appalachian Mountains currently stretch from the island of Newfoundland in Canada all the way down to Central Alabama in the United States spanning 2,050 miles (3,300 km). While this mountain range is not as tall as other mountain ranges in the world, it is significantly older than both the Rocky Mountains and the Himalayan Mountains.