Eggs

Eggs of various birds, a [[turtle, various cartilaginous fish, a cuttlefish and various butterflies and moths. (Click on image for key)|right|thumb|link=File:Adolphe_Millot_oeufs-fixed.jpg#Key]]

haploid female reproductive cell or gamete

thumb|The yolk of a chicken egg thumb|Diagram of a fish egg; the yolk is the area which is marked 'C' Among animals which produce eggs, the yolk (; also known as the vitellus) is the nutrient-bearing portion of the egg whose primary function is to supply food for the development of the embryo. Some types of egg contain no yolk, for example because they are laid in situations where the food supply is sufficient (such as in the body of the host of a parasitoid) or because the embryo develops in the parent's body, which supplies the food, usually through a placenta. Reproductive systems in which

clear liquid contained within an egg

thumb|350px|The characteristic quivering abdomen caused by movement of tadpoles within a pregnant female [[Limnonectes larvaepartus]]

the process by which certain oviparous (egg-laying) animals hatch their eggs

device to keep eggs warm

thumb|upright=1.4|A broken wild bird eggshell

component of avian reproduction

Kitchen appliance