Hi,
So me and my colleague are wondering how to properly interpret a phylogenetic tree based on branch length and bootstrap values and how to interpret the best-fit model according to BIC(IQ-Tree results) for a scientific publications?
See attached screenshots for details
Any help is very well appreciated ^^
Is this from a single sequence/region, or is it from a concatenation of multi-locus?
IQ-Tree automatically estimates the substitution model that best fits your data (the one with the lower BIC value, in this case).
Imagine bootstrap values as saying that n out of 100 runs, that was the obtained topology.
Branch length is relative to what you're analyzing, and unless you're estimating divergence times, I would probably not get too deep into it (although I might be wrong).
Probably this paper will help you clarify the mind: https://academic.oup.com/sysbio/article/48/4/814/1627565
Cheers!
By the way, you may want to edit your phylogenetic tree (re-root it or improve its visualization. This tool might be of help: https://itol.embl.de/)
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