description of eggs
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Egg An egg is the organic vessel containing the zygote in which an animal embryo develops until it can survive on its own, at which point the animal hatches. An egg results from fertilization of an ovum.Most arthropods, vertebrates, and mollusks lay eggs, although some do not, such as scorpions and most mammals. Reptile eggs, bird eggs, and monotreme eggs are laid out of water, and are surrounded by a protective shell, either flexible or inflexible.esolecithal eggs have comparatively more yolk than the microlecithal eggs. The yolk is concentrated in one part of the egg (the vegetal pole), with the cell nucleus and most of the cytoplasm in the other (the animal pole). The cell cleavage is uneven, and mainly concentrated in the cytoplasma-rich animal pole.
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- The avian egg is an important source of nutrients,containing all of the proteins, lipids, vitamins,minerals, and growth factors required by the de-veloping embryo, as well as a number of defensefactors to protect against bacterial and viral infec-tion.
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yolk yolk. n. 1. (Zoology) the substance in an animal ovum consisting of protein and fat that nourishes the developing embryo. 2. (Zoology) a greasy substance secreted by the skin of a sheep and present in the fleece.
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Incubation and Embryology - University of Illinois 1 Cuticle-A secretion of the uterus consisting mainly of protein that serves to partially seal the pores in the egg's shell and acts as a lubricant when the egg is laid; commonly called the bloom. 2  Egg-The microscopic cell of the female; the true egg; the female germ cell.
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- Statistics about sexual violence National Sexual Violence Resource Center z Info & Stats For Journalists Sexual violence in the U.S. y One in ﬁve women and one in 71 men will be raped at some point in their lives (a) y 46.4% lesbians, 74.9% bisexual women and 43.3% heterosexual women reported sexual violence other than rape during their lifetimes, while 40.2% gay men, 47.4% bisexual men and 20.8% heterosexual men reported sexual violence other than rape during their lifetimes. (p) y Nearly one in 10 women has been raped by an intimate partner in her lifetime, including completed
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Incubation and Embryology - University of Illinois 1 Fertilization-The act or process of making or becoming fertile; the union of a male cell with a female cell. 2  Infertile-An egg that is not fertilized, will not hatch. 3  Shell-The hard outer surface of an egg made up largely of calcium carbonate; the shell has pores allowing loss of carbon dioxide and moisture from the egg.
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- 1. Define the role(s) of ooplasmic Balbiani bodies in body plan patterning and cell fate determination during embryogenesis. 2. Investigate the functions of ooplasmic ecdysone during insect embryogenesis. 3. Determine the biological significance of nonrandom distributions of yolk proteins within insect oocytes.nderstanding how a complex organism develops from a single fertilized egg is critical for improved agricultural and medical practices. Crucial information for accomplishing this is assembled in the cytoplasm of the egg before fertilization.
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- Definition of YOLK SAC. : a membranous sac of most vertebrates that encloses the yolk, is attached in most forms (as in humans) through the yolk stalk with the intestinal cavity of the embryo, and is supplied with blood vessels that transport nutritive yolk products to the developing embryo. ADVERTISEMENT. a membranous sac of most vertebrates that encloses the yolk, is attached in most forms (as in humans) through the yolk stalk with the intestinal cavity of the embryo, and is supplied with blood vessels that transport nutritive yolk products to the developing embryo. ADVERTISEMENT.
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Yolk The yolk of a chicken egg. The yolk is a part of an egg (or just of the egg cell in non-egg-laying animals) that feeds the developing embryo in animals. In whole eggs, 43% of the protein comes from the yolk.Also known as deutoplasm, this food material is accumulated during oogenesis, together with RNA molecules and other substances.he yolk is a part of an egg (or just of the egg cell in non-egg-laying animals) that feeds the developing embryo in animals.
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- Incubation is a process by which birds hatch their eggs, and to the development of the embryo within the egg. Incubation period is very critical and maintaining constant temperature required for its development over a specific period is a vital factor of incubation.he females will lay their fertilized eggs in a single communal nest, a simple pit, 30 to 60 centimetres (12–24 in) deep and 3 metres (9.8 ft) wide, scraped in the ground by the male. The eggs are incubated by the females by day and by the males by night.
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Lists of foods Eggs are laid by female animals of many different species, including birds, reptiles, amphibians, and fish, and have been eaten by humans for thousands of years. Bird and reptile eggs consist of a protective eggshell, albumen (egg white), and vitellus (egg yolk), contained within various thin membranes. The most popular choice for egg consumption are chicken eggs. Other popular choices for egg consumption are duck, quail, roe, and caviar.
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- Define egg sac: egg case egg case; one of a pair of egg masses that project into the water from the first abdominal segment of certain crustaceans (as most copepods)… See the full definition
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- It's the least familiar part of the egg, so here's a little info: The chalaza (Greek-khalaze -hailstone) is a structure inside animal eggs and plant ovules(eggs).It attaches or suspends the yolk (nucellus) within the larger structure.
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What is the white part of an egg called and what is it made of? A raw egg yolk surrounded by the egg white. Egg white is the common name for the clear liquid (also called the albumen or the glair / glaire) contained within an egg. In chickens it is formed from the layers of secretions of the anterior section of the hen's oviduct during the passage of the egg.
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Egg yolk recipes By William Leigh. The opaque, viscous orange centre of an egg, intended to feed the developing embryo. Egg yolks have a lower water content than the white that surrounds them, but contain higher levels of protein and significantly more fat. They have a much richer flavour, and are used to thicken sauces such as mayonnaise and custard. Contrary to popular myth, the colour of an egg yolk has no bearing on its quality – it simply reflects the breed of the hen, its diet and the time of year at which it was laid.
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Egg cell They are fertilized by male sperm either inside the female body (as in birds), or outside (as in many fish). After fertilization, an embryo develops, nourished by nutrients contained in the egg. It then hatches from the egg, outside the mother's body. See egg for a discussion of eggs of oviparous animals.
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embryo embryo. 1  In the reproductive cycle, the stage after the fertilization of the egg that precedes the development into a fetus. 2  An organism in the earlier stages of development before it emerges from the egg, or before metamorphosis. 3  In viviparous animals, the young animal's earliest stages in the mother's body.
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- The yolk is a part of an egg (or just of the egg cell in non-egg-laying animals) that feeds the developing embryo in animals. In whole eggs, 43% of the protein comes from the yolk.
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- The developing chick in an. egg is called an embryo, and a careful study of the different stages of. embryonic development will uncover many interesting facts. Incubation of eggs will show you the effects of heat, air, and. moisture on hatchability. You will find out how an egg is formed, what.
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All About the Egg 1 Shell: The egg's first line of defence against the entry of bacteria. 2  Can be white or brown, depending on the breed of hen; the nutritional value of the egg is the same. 3  Approximately 10,000 tiny pores allow moisture and gases in and out.
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Egg as food An egg is surrounded by a thin, hard shell. Inside, the egg yolk is suspended in the egg white by one or two spiral bands of tissue called the chalazae (from the Greek word χάλαζα, meaning hailstone or hard lump).
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Gilman, Taylor County, Wisconsin Gilman, Taylor County, Wisconsin. Gilman is a village in Taylor County, Wisconsin, United States. The population was 410 at the 2010 census. The village is located between the towns of Aurora and Ford.
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AMNIOTE EGG COLORING The egg of the reptile is a special kind of egg. It has a shell to help prevent drying, and a series of membranes that surround the developing chick. This kind of egg is unique to the amniotes, a group that includes turtles, lizards, birds, dinosaurs, and mammals.
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What Causes Double Yolks? A hen’s reproductive system consists of an ovary and an oviduct. The ovary contains undeveloped egg yolks. The number of yolks (or ovum) that are contained here are the total number of eggs that the chicken can lay in her life. These are released into the oviduct as each yolk develops.
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yolk Noun. 1. egg yolk-the yellow spherical part of an egg that is surrounded by the albumen. yolk. fixings, ingredient-food that is a component of a mixture in cooking; the recipe lists all the fixings for a salad. eggs, egg-oval reproductive body of a fowl (especially a hen) used as food.
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- In fact, we group eggs and dairy foods together this way on our website. It is important, however, to understand how eggs are unique as a food. Chickens—and the eggs laid by female chickens (hens)—belong to the bird class of animals (Aves). Hen's eggs are one among many types of bird eggs enjoyed in diets worldwide.