Lambda trees: taxa group with just one species?

[aebaci]

Hi:
I have many different lambda trees for my phylogeny, and I ran them with no problem. However, I realised that I made a mistake in the previous filtering of protein clusters, as I had just removed those above 100 counts, but I did not check that within groups there were minimum 2 counts above 0 (only that in total there were at least 2 taxa with counts above 0). I have done it now, but this prompts the question:
Do the Lambdas have to follow the same rule? E.g., there cannot be a taxa group with just one species?
I would appreciate if you clarify this, as it requires re-running and discarding many trees with lambdas for single species.
Thanks,

[hahnlab-user]

I don't think that a clade that shares the same lambda has to necessarily meet these conditions for minimum numbers of taxa above 0, as sometimes you can have one tip branch (and therefore one species) with its own lambda. I hope that helps.

Matt