Also, how is it possible that sometimes inside a chicken’s egg there is another smaller egg..?
In: Biology
Eggs are formed in layers. The egg yolk is the equivalent of human egg cells, but bigger and with a big nutrient reserve. The yolk is expelled from the ovary and travels down a tube where the hen adds layers of egg white. Once there is sufficiently white, the tube secretes calcium carbonate (the same stuff chalk, sea shells and pearls are made of). Once the shell is thick enough, the egg travels the last bit down the tube and is ready to be laid.
A small egg inside a larger egg happens when for some reason an egg gets delayed and essentially the next egg catches up with it, and they end up being encased in a single shell together. If you’ve seen Charlie Chaplins movie Modern Times, you can compare it to the fast conveyor belt where of you don’t keep up your work piles up. Reasons for a “Russian doll egg” can be stress, hormone issues, nutritional problems, etc.
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