Given the features found individually in Archaea, Bacteria, and Eukarya, what features were probably present in the last common ancestor of all living things?
A)prokaryotic cell organization
B)photosynthesis
C)a membrane-bounded nucleus
D)DNA in a single circular chromosome

Question

Quizplus · Accepted Answer

Archaea and Bacteria are both prokaryotic and have DNA in a single circular chromosome, which suggests that these features were present in the last common ancestor of all living things. The presence of a membrane-bounded nucleus and photosynthesis are features that are unique to Eukarya and thus not likely to have been present in the last common ancestor.

Given the Features Found Individually in Archaea, Bacteria, and Eukarya