While mRNA strands are being created, a sequence is sometimes miscopied. What is the worst that could happen to a cell should th
is take place? The cell will not make functional proteins from that mRNA strand. The cell will die once it tries to use that strand of mRNA. The cell will have to destroy any ribosomes that use the mRNA strand. The cell will pass the mRNA mutation on to all the cells made from it.
Incorrect protein synthesis from that specific cell is the worst possible outcome of the situation. Not all of the cells in the body are affected so functional protein will still be produced and the organism's body will continue to function.