I'm analysing a small subset of SNP markers found in a small number of genes. I am looking at whether there is some differentiation between two sub-populations using a PCA.
I have been reading around and from what I've inferred, scaling the variables in genetic analysis is not a good idea because the units are the same. However, I was wondering whether or not there are some circumstances in which scaling would be a good idea, in my case for example.
Thanks in advance!