Hens egg is fertilised or unfertilised? How chick is coming out of this?
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When a hen mates, the roo's sperm penetrates the egg and the blastodisc, a tiny white spot which carries the chick's DNA, becomes fertilised. It's then called the blastoderm. The blastoderm is what becomes the chick, if the egg is incubated at the right temperature and humidity levels.
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