Research Questions:
The yolk forms inside the egg when a hen is laying the egg. It has to form inside their body, first, and what will happen is when the chicken eats something, that food will turn into yolk, and the yolk goes down tiny intestines, and soon it will come to a very large intestine, and that is where the egg forms around the yolk, so that the chicken can lay the egg.
If you eat a bad egg, you might throw up or have serious stomach pain, and a fever when you eat bad eggs. It could be contaminated with salmonella.
A baby chick forms inside an egg when it is fertilized by a rooster, the yolk forms during ovulation inside the hen’s ovary. At this point in development, the yolk is called an oocyte. After the oocyte has formed, the hen’s ovary releases it into the oviduct.
https://www.exploratorium.edu/cooking/eggs/eggscience.html
https://www.exploratorium.edu/cooking/eggs/
https://www.stevespanglerscience.com/lab/experiments/amazing-eg
http://www.science-sparks.com/2013/02/16/10-egg-science-experim