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Embryo Development

Science Project

What is an egg? An egg is a female reproductive cell
What is sperm? The sperm is the male reproductive cell
What is fertilization? The union of the sperm cell nucleus and the egg cell nucleus
Where are the eggs of reptiles, birds, and mammals FERTILIZED? They are fertilized inside the body of the mother
What is an embryo? Unhatched offspring
Where does an embryo that develops inside an egg get its food? the yolk
Where do the embryos of placental mammals get their food? The mother
Created by: olivia1234