How does a mutation affect the whole genome of an organism?Watch
Because surely that mutation only happens in one cell, meaning it practically leaves no change right? Can someone clear some things up for me here.
There are beneficial ones and harmful ones. They can harm you for example cystic fibrosis.
Hope that helps.
Alternatively, a somatic (that is, not in a sex cell; literally ''bodily'' ) mutation can affect a whole organism because all of that cell's offspring will also carry the mutation - this is how cancer happens. In that case not all of the organism's cells carry the mutation and the mutation is not heritable, but can obviously still affect the organism.