Answer:
the central nervous system
Explanation:
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Pituitary gland.
When you feel stress, the pituitary gland, at the base of the brain, increases its production of the hormone ACTH. This hormone tells the adrenal glands, found at the top of your kidneys, to increase their production of hormones. These stress hormones help you to concentrate, speed your reaction time, and boost your strength. Your hypothalamus also helps your body respond to stress.
It gets transferred through out animals
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One of the daughter cell would have an extra chromosome while the other would be short one. It's called nondisjunction
