<span>norepinephrine is the cause for manic depression</span>
Answer:
Mutations contribute to genetic variation within species. Mutations can also be inherited, particularly if they have a positive effect. For example, the disorder sickle cell anaemia is caused by a mutation in the gene that instructs the building of a protein called hemoglobin.
Explanation:
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Continue to look for the class characteristics because it helps their case in the courtroom and shows how everything links to the other eveident peices