the yellow spherical part of an egg that is surrounded by the albumen
the most primitive mammals comprising the only extant members of the subclass Prototheria
the yellow spherical part of an egg that is surrounded by the albumen
nutritive material of an ovum stored for the nutrition of an embryo (especially the yellow mass of a bird or reptile egg)
animal reproductive body consisting of an ovum or embryo together with nutritive and protective envelopes; especially the thin-shelled reproductive body laid by e.g. female birds
one of the two male reproductive glands that produce spermatozoa and secrete androgens
