Contrary to the gradualism of Lyell and Darwin, the fossil record shows that most evolution is saltatory, occurring in scattered leaps. I've studies three-letter organisms which by point mutation saltate (jump-evolve) into others, as yam into ram. You may doubt single mutations can turn plants into animals, but letters don't lie!
"Saltatory Evolution and the Vine of Life,"
Word Ways: Vol. 47
, Article 10.
Available at: http://digitalcommons.butler.edu/wordways/vol47/iss4/10