16S questions

[Walter Blank]

A friend of mine asked me a couple of questions that I don't know if there
are any hard-and-fast answers to:

>Q1: For identification of an organism by 16s rRNA is there a "rule" that
>would tell you how much identity you need to classify an organism within a
>certain species?
>
>Q2: How much difference would you need to classify it as a new species?

Maybe someone out there can help us out?

Thanks bunches!

Wally

It's all much appreciated.  Out!