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:
“Good resolutions are useless attempts to interfere with scientific laws. Their origin is pure vanity. Their result is absolutely nil. They give us, now and then, some of those luxurious sterile emotions that have a certain charm for the weak.... They are simply cheques that men draw on a bank where they have no account.”
—Oscar Wilde (1854–1900)