The random changes a mutation causes to an organisms genetic code causes either1. A different protein to be produced or2. none at allMutations can either have a positive, negative or neutral (the vast majority) effect on the organism. (many times whether they are harmful or helpful depends on the environment.)When a mutation makes an organism better able to survive that organism is more likely to survive and pass the mutated gene onto the next generation.
In each cell, through a process of gene expression, DNA is transcripted into mRNA which are templates used to create different proteins resulting in different functions in your body.
