Generation X. 1  For a few more years, Gen Xers are projected to remain the âmiddle childâ of generations â caught between two larger generations of the Millennials and the Boomers. 2  Though the oldest Gen Xer is now 50, the Gen X population will still grow for a few more years.
Mutation is the act or process of changing into a different form, or someone or something with an odd or unusual form. When a woman drinks alcohol when she is pregnant and causes the cells of the fetus to change and morph into abnormal cells, this process of the cells changing is an example of mutation.
A gene mutation is a permanent alteration in the DNA sequence that makes up a gene, such that the sequence differs from what is found in most people.Mutations range in size; they can affect anywhere from a single DNA building block (base pair) to a large segment of a chromosome that includes multiple genes.n some cases, the mutation occurs in a personâs egg or sperm cell but is not present in any of the personâs other cells. In other cases, the mutation occurs in the fertilized egg shortly after the egg and sperm cells unite.