This is speciation, or as Khan Academy says, "the process by which new species form... when groups in a species become reproductively isolated and diverge". As Berkeley puts it, "a species is a group of individuals that can interbreed". CREDITS: Amoeba Sisters. (2017). Speciation. 2020, from https://www.youtube.com/watch?v=udZUaNKXbJA (n.d). (n.d.). Speciation. 2020, from https://evolution.berkeley.edu/evolibrary/article/evo_42 (n.d.). (n.d.). Species & speciation (article). Retrieved June 09, 2020, from https://www.khanacademy.org/science/biology/her/tree-of-life/a/species-speciation