Pratik Pusadkar The phylogenetical tree based on genome sequences of several mutated SARS-CoV-2 isolates has been done out there.
Probably you can find different genome sequences from those mutated isolates deposited at the site below:
Nextstrain ( https://nextstrain.org/ )
Nextstrain
(1) Real-time tracking of pathogen evolution
"Nextstrain is an open-source project to harness the scientific and public health potential of pathogen genome data. We provide a continually-updated view of publicly available data alongside powerful analytic and visualization tools for use by the community. Our goal is to aid epidemiological understanding and improve outbreak response."
(2) Novel coronavirus (2019-nCoV)
We are incorporating nCoV genomes as soon as they are shared and providing analyses and situation reports. Please see below for the latest updates.
Yes, as virus spreads across the globe it is amplifying and accumulating mutations. Through genetic diversity analysis we analyze these mutations, and thus can reconstruct the phylogeny and demographic patterns of the virus. We can track, link and map the outbreaks occurring in different geographical areas through various bioinformatic analyses. All this what we do to trace the outbreak is termed as molecular epidemiology.