Holmes, The Biology of the Frog. The Macmillan Company.
Jordan, Fishes. Henry Holt and Company.
Morgan, The Development of the Frog's Egg. The Macmillan Company.
Needham, General Biology. Comstock Publishing Company.
XVII. HEREDITY, VARIATION, PLANT AND ANIMAL BREEDING
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.