1 If you are unhappy with your tattoo, having it altered or tattooed over might cost hundreds of dollars and removal is even more expensive-up to $10,000 in some cases. And some artists will charge extra for custom designs, but it is more common to ask for a deposit of about $50. 2  If you are unhappy with your tattoo, having it altered or tattooed over might cost hundreds of dollars and removal is even more expensive-up to $10,000 in some cases.
1 Single gene disorders are caused by a mutation in a single gene. 2  The mutation may be present on one or both chromosomes (one chromosome inherited from each parent). 3  Sickle cell disease, cystic fibrosis and gCJD are examples of single gene disorders.
1 Only a few human diseases are triggered by a single gene working by itself. 2  In most cases, a disease results from the actions of many genes. 3  An example of a single-gene disorder is Huntington's disease, which was discussed in the last chapter. 4  One error in one gene leads to the fatal health problems of HD. Only a few human diseases are triggered by a single gene working by itself. 2  In most cases, a disease results from the actions of many genes. 3  An example of a single-gene disorder is Huntington's disease, which was discussed in the last chapter. 4  One error in one gene leads to the fatal health problems of HD.