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What determines the color of an egg shell?

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Breed and genetics determine the color of the hens egg. The part of the oviduct called the Isthmus is where the membranes of the inner shell are deposited, for some select breeds like Araucana this is where the color of the egg shell is first deposited. Calcification of the shell takes place in the uterus and at this time and for most breeds of chicken the color of the shell is acquired in the uterus just prior to being released to the vagina and released through the vent.
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Does a chicken egg shell color matter to the breed?

umm... i kinda' understand the question, so i am gonna fo my best 2 answer it correctly. a white egg comes from a white chicken while a brown egg comes from brown chickens, wh

What determines the color of an egg?

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Does the rooster determine egg color?

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How can you determine the color of the egg a hen will lay?

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What colors are mixed to make egg shell color?

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