Our understanding of many of the evolutionary relationships among animals changed after those phylogenies were based on morphological and molecular data (as opposed to only using morphological data).What do these changes indicate?
A) molecular and morphological studies rarely agree
B) molecular studies add additional information to morphological studies and improve our understanding of evolutionary history
C) molecular studies are less reliable than morphological studies
D) molecular studies are extremely time consuming and expensive and really don't add additional information to our understanding of evolutionary history

Question

Quizplus · Accepted Answer

Molecular studies, which include DNA and genetic analysis, have provided new insights that complement and sometimes correct interpretations based on morphology (physical structures). This has led to a more accurate understanding of evolutionary relationships by revealing connections not apparent through morphology alone.

Our Understanding of Many of the Evolutionary Relationships Among Animals