Scientific Classifications
Scientists often classify animal reproduction by degree of development that occurs before the new individuals are expelled from the adult body, and eggs by the degree of yolk they include.
Read more about this topic: Egg (biology)
Famous quotes containing the word scientific:
“God isn’t compatible with machinery and scientific medicine and universal happiness. You must make your choice. Our civilization has chosen machinery and medicine and happiness.”
—Aldous Huxley (1894–1963)