egg(redirected from laying an egg)
Also found in: Dictionary, Thesaurus, Idioms, Encyclopedia.
See also: oocyte, ovum.
eggA popular term for a genetically haploid female sex cell.
eggParasitology A fertilized gamete which may give rise to an adult. See Chicken footprint egg Reproduction medicine A female reproductive cell, also called an oocyte or ovum.
See also: oocyte
eggThe OVUM or female reproductive cell (GAMETE). The egg contains half the chromosomes required by the new individual, and the other half are supplied by the sperm at the moment of fertilization. The egg is a very large cell, about one tenth of a millimetre in diameter, and much larger than a sperm. This is because it contains nutritive material (yolk) to supply the embryo in its earliest stages before it can establish a supply from the mother via the placenta. If more than one egg is produced and fertilized, a multiple pregnancy results, but the offspring are not identical since half the chromosomes in each come from different sperms, with different genetic material. If a fertilized ovum divides, and each of the two halves forms a new individual, these will be identical twins, with identical chromosomes.
- see OVUM.
- a structure produced by insects, birds and reptiles whose function is to enable embryonic development outside the female on land without the use of water as a growth medium. The vertebrate egg consists of an outer shell (hard in birds, leathery in reptiles), four types of embryonic membranes, a food supply in the yolk sac and surrounding albumen (‘egg white’) and the embryo which develops from an OVUM fertilized before the shell is deposited. Domestic birds can produce unfertilized eggs in which the embryo does not develop.
Patient discussion about egg
Q. Is there any difference between brown eggs and white eggs? My fitness instructor suggested me to have brown eggs instead of white eggs so is there any difference between brown eggs and white eggs?
Q. why the renal doctor told my husband that he needs to eat a dozen of egg a week for protein,how it will help? it won`t afect his cholesterol,also i would like to know what role the protein plays on his treatment and what other foot its rich in protein that he can can take,without causing problems to his health.
here is a list of a 100 protein rich foods:
Q. How can I catch Salmonella? Yesterday I ate a mousse which was made from raw eggs. Could I have caught Salmonella?