_Problems.--To determine what makes the offspring of animals or plants
tend to be like their parents._
_To determine what makes the offspring of animals and plants
differ from their parents._
_To learn about some methods of plant and animal breeding._
_(a) By selection._
_(b) By hybridizing._
_(c) By other methods._
_To learn about some methods of improving the human race._
_(a) By eugenics._
_(b) By euthenics._