title: Horizontal evolution
text: # Horizontal evolution
  
  The phrase horizontal evolution is used in evolutionary biology to refer to:
  
  * Concerted evolution, whereby individual members of a DNA family within one species are more closely related to each other than to members of the same type of DNA family in other species;
  * Horizontal gene transfer, where genes are transferred from one organism to another by means other than genes received from an ancestor
  
  It is sometimes used by creationists as a synonym for
  
  