Explain why the species member would be unlikely to pass the gene muatation on to its offspring

Mutations occur all over our body consistently since all of our cells contain DNA. Some mutations would not be passed on to offspring and they don't matter for Evolution. "Somatic Mutations" are mutations that occur in the cells that do not form gametes and do not end up carried by the sperm or eggs. Such mutations could be in your skin, muscles, liver, ect. 

In 2081, everyone is equal not only in the eyes of the law but in every way; nobody is smarter, more athletic, better looking, etc. than anyone else. hazel is of average intelligence, which means she can't think about anything except in short bursts, and george has an intelligence way above normal.