Egg

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Eggs o various birds, a reptile, various cartilaginous fish, a cuttlefish an various butterflees an mochs. (Click on image for key)

An egg is the organic vessel containin the zygote in which an ainimal embryo develops till it can survive on its ain, at which pynt the ainimal hatches. An egg results frae fertilization o an ovum. Maist arthropods, vertebrates, an mollusks lay eggs, althou some dae nae, such as scorpions an maist mammals.