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The yolk of a chicken egg Diagram of a fish egg; the yolk is the area which is marked 'C'. Among animals which produce eggs, the yolk (/ ˈ j oʊ k /; 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.
The color of an egg yolk is entirely dependent upon a hen's diet, an expert said. A diet with more carotenes and xanthophylls will produce a darker yolk.
Mesolecithal 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. [3]
It can be jarring to crack an egg and see a bright orange yolk instead of the expected pale yellow, or vice versa. Americans eat on average nearly 300 eggs a year, making it likely you’ll stare ...
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'). The shape of a chicken egg resembles a prolate spheroid with one end larger than the other and has cylindrical symmetry along the long axis.
Take a closer look at the pros and cons of eating whole eggs (yolk and all!) to find out what's behind egg's bad reputation and whether you're missing out on some key nutrients.
A raw egg with the round orange yolk (containing the visible white chalaza) in the center surrounded by the transparent yellow egg white. Egg white is the clear liquid (also called the albumen or the glair / glaire ) contained within an egg .
Adding eggs to a salad or sandwich can provide an easy vitamin D boost. A single egg yolk contains more than a third of a person's daily recommended amount of vitamin D.