Johnjoe McFadden wrote:
>> Punctuated equilibrium and molecular clocks?
> Carl Wooese did suggest that mycoplasmas have gone through a rapid burst
> of evolution on the basis of ribosomal RNA sequences but is there any
> other evidence?
Yes, there is: Friedrich and Tautz (1997) An episodic change of rDNA
nucleotide substitution rate has occurred during the
emergence of the insect order Diptera.
Mol. Biol. Evol. 14, 644-653