Chromosome 10 STRESS
In this chapter the gene known as CYP17 enables the conversion of cholesteral to cortisol and also testosterone to oestradiol. These steroids relate to the stress released by the brain. By signaling stress the brain sets genetic triggers. This causes genes to turn on and odd which brings into play other systems of the body, for example the immune system. Ridley begins to compare the human body and it's connections to the real life world outside of a body like the connections between systems, they all lead to a control. Everything that occurs in the human body is just like the outside, you have a control and that leads to systems.
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