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Are mutations good or bad?Mutations can be good, bad or neutral in regards to what dna they alter and where in the code thechange . Some mutations are both good and bad, depending on the degree to which an individual has the mutation. If the mutations resulted in a new functional protein, which would be advantageous for the organism, they are considered as good mutations. Mutations are essentialto evolution; they are the raw material of genetic variation. Without mutation, evolution could not occur. Which is beneficial for the earth to evolve from diseases and bacteria to defend itself in later generation Mutations are always a loss of information and damage to the genome. They can control the frequency of transposition limiting deleterious mutations. Some advantageous mutations are rareand hard to detect those being. Back mutations occur if a large enough number of slightly deleterious mutations was previously fixed, compensatory mutations partially repair some