Complex sentence: Relative apparent synapomorphy analysis, or RASA, is a method that determines whether a given character is shared between taxa due to shared ancestry or convergence, assigning a score to the character based on its potential to be informative.
Split into simpler sentences: Relative apparent synapomorphy analysis, or RASA, is a method that aims to determine whether a given character is shared between taxa due to shared ancestry or due to convergence. RASA assigns a score to the character based on its potential to be informative.