How are mutations beneficial?

Most random genetic changes caused by evolution are neutral, and some are harmful, but a few turn out to be positive improvements. These beneficial mutations are the raw material that may, in time, be taken up by natural selection and spread through the population. read more

Mutation, as a biological mechanic, is beneficial because it alters the intrinsic fitness of a member of the species. Fitness can decrease on an individual scale, but it is the mutations that increase fitness that drive a species forward. read more

It is possible that the mutations would not be beneficial in other environments (i.e. if the person is exposed to West Nile Virus). Keep in mind that beneficial, information-gaining mutations are a necessary mechanism of molecules-to-man evolution, so focusing on any potential for this is essential for evolutionists. read more

Beneficial mutations can also be closely associated with harmful ones. Take, for example, sickle cell disease (SCD). This disease is caused by a mutation that causes red blood cells to develop a crescent, or sickle shape; this abnormal shape can lead to a number of health problems. read more