In genetics I want to test whether InDel (insertion and deletion in DNA) sizes occurs with the same probability.
I heard that I should gamma distribution to model it. I found
in R and I rejected hypothesis that length of InDels are gamma distributed, but what does it mean? Doest it mean that are no random or what?
Second case. I want to check whether in some bins of chromosomes, some mutations occur randomly so I should use Poisson distribution. Which test with which parameter should I use to check randomness of mutation occurrence in chromosome across each non-overlapping window (bin)?