1:How is the information in our DNA/genes used by our bodies?
DNA is the genetic code for your body. DNA tells what color your hair is going to be or what skin pigment you will have-- how much melanin your skin will produce. It even tells what kind of nose you will have and what your lips will be like. It makes you who you are. Chromosomes, strands of DNA packed together, also tell if you will be Autistic or have some genetic disease. Some diseases are caused by the mutation of DNA, but not all.
What happens when the DNA is mutated or not used property?
The sequence of the nitrogenous bases changes and sometimes some bases are added to the sequence or completely removed, also diseases are caused by the mutation of DNA.
2:The mutation of this DNA cause disease. The name of disease is Parkinson’s.
Description of disease: Parkinson's disease is a disease of the central nervous system that causes problems with body motions, including tremor (shakiness), rigidity (muscle stiffness), slowed body movements, unstable posture and difficulty walking. It happens when nerve cells (neurons) in a part of the brain called the substantia nigra gradually die. These cells normally produce a chemical called dopamine that helps to relay messages between areas of the brain that control body movement. The death of cells in this area of the brain leads to abnormally low levels of dopamine, which makes it difficult for a person with Parkinson's disease to control muscle tension and muscle movement, both at rest and during periods of activity. So far, scientists have not determined why some people develop Parkinson's disease and others do not. The genetics are complex and the influence of family history depends on the age when the disease started. A person who has a parent or sibling that was diagnosed with the disease at a younger age is at higher risk of getting Parkinson's, but not if the affected family member was older when diagnosed.
Symptoms:
Parkinson's disease usually begins as a slight tremor or stiffness in the arm or leg on one side of the body. The tremor is most obvious at rest and is regular, typically occurring three to six times per second. The Parkinson's disease tremor usually worsens under stress, improves when the arm or leg is moved voluntarily, and may disappear entirely during sleep. In the earliest stages, Parkinson's disease may be evident only as a tremor involving the thumb and index finger. This tremor sometimes is called "pill-rolling" tremor because it looks as if the person is manipulating a small object such as a pill.As the illness worsens, the tremor may become more widespread and eventually affect limbs on both sides of the body. Handwriting may become small, shaky and eventually illegible. In addition to the classic tremor, Parkinson's disease often causes stiffness or rigidity in the muscles of the arms or legs and a slowing of body movements, called bradykinesia. The rigidity and bradykinesia can be the most disabling aspects of the disease. They can impair the person's ability to walk and to do daily activities, such as washing, dressing or using eating utensils. Problems with unsteady balance and posture may make it hard for a person with Parkinson's disease to sit down in a chair or to rise from one. Walking is accomplished with small, shuffling steps and a stooped posture, usually without the normal arm-swinging motions. Bradykinesia can affect the facial muscles, decreasing spontaneous facial expressions and normal eye blinking.

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3:If you have more than one mutation in your DNA , what can happens ?
A gene mutation is when the replication process of DNA makes a sort of "mistake", and you have a gene that's different than it should be when you're created. Many people don't go through gene mutations without having some sort of defect; however it's possible that you turn out normal and healthy but with a