Egg FAQs:

Q: Is an egg the organic vessel containing the zygote in which an animal embryo develops until it can survive on its own?

A: Yes, at which point the animal hatches.

Q: Are eggs the white of the calcium carbonate from which the shells are made?

A: Yes, but some birds, mainly passerines, produce colored eggs.

Q: Are eggs common among invertebrates?

A: Yes, and including insects, spiders, mollusks, and crustaceans.

Q: Are eggs often rubbery and are always initially white?

A: Yes.

Q: Are eggs sometimes thrown at houses?

A: Yes, and cars, or people.

Q: Are eggs laid by females and incubated for a time that varies according to the species?

A: Yes, a single young hatches from each egg.

Q: Are eggs the norm?

A: Yes, as in bivalves and marine arthropods.

Q: Are eggs found in flatworms?

A: Yes, and roundworms, annelids, bivalves, echinoderms, the lancelet and in most marine arthropods.

Q: Is an egg from a whale shark?

A: Yes, and was 30 cm × 14 cm × 9 cm in size.

Q: Is an egg held during the feast of Corpus Christi in Barcelona and other Catalan cities since the 16th century?

A: Yes.

Q: Are eggs removed or eaten by the female?

A: Yes, or expelled by her chick.

Q: Is an egg reduced in size to essentially a naked egg cell?

A: Yes.

Q: Are eggs fertilized and develop internally?

A: Yes.

Q: Are eggs fertilized internally and exhibit a wide variety of both internal and external embryonic development?

A: Yes.

Q: Are eggs laid out of water?

A: Yes, and are surrounded by a protective shell, either flexible or inflexible.

Q: Are eggs an incidental consequence of having a streamlined body typical of birds with strong flying abilities?

A: Yes, flight narrows the oviduct, which changes the type of egg a bird can lay.

Q: Are eggs considered pareve despite being an animal product and can be mixed with either milk or kosher meat?

A: Yes.

Q: Is an egg the largest egg of any living bird?

A: Yes, though the extinct elephant bird and some dinosaurs laid larger eggs.

Q: Are eggs based on the eggs of chordates?

A: Yes, though the basic principle extends to the whole animal kingdom.

Q: Are eggs found in cartilaginous fish?

A: Yes, and reptiles, birds and monotreme mammals.

Q: Are eggs only found in selected representatives of two groups: Cephalopods and vertebrates?

A: Yes.

Q: Are eggs also often thrown in protests?

A: Yes, as they are inexpensive and nonlethal, yet very messy when broken.

Q: Are eggs usually few in number?

A: Yes, and the embryos have enough food to go through full fetal development in most groups.

Q: Are eggs laid at one time and the eggs are then left to develop without parental care?

A: Yes.