I'm a little concerned about the differences described in the article between drift and mutation. Surely drift requires mutation. Are they really distinct concepts? --[[User:Horace|Horace]] 00:33, 22 March 2007 (EDT) | I'm a little concerned about the differences described in the article between drift and mutation. Surely drift requires mutation. Are they really distinct concepts? --[[User:Horace|Horace]] 00:33, 22 March 2007 (EDT) |