Are cell mutations always bad?

A mutation is a change in the genetic material of an organism.
We’re made from trillions of cells, each with a nucleus
composed of DNA – a set of instructions that tells the cell what
to do. Cells copy themselves with astonishing accuracy, but every now
and then a piece of code is copied incorrectly. This is largely due to
natural radiation interacting with our DNA. This incorrect
piece of code can become a permanent change in the
DNA. Mutations are rarely harmful though. Indeed, most
mutations go unnoticed, as the body has mechanisms to
stop a cell copying itself. Sometimes mutations can benefit
organisms. When a mutation allows an organism to cope
better with an environmental stress, it will be passed on to
future generations through natural selection.


About the author


Add Comment

Click here to post a comment