Analysis of genomes of modern species indicates that the first cells were similar to existing ____.
A) viruses
B) fungi
C) prokaryotes
D) eukaryotes
E) algae

Question

Analysis of genomes of modern species indicates that the first cells were similar to existing ____.  
A) viruses
B) fungi
C) prokaryotes
D) eukaryotes
E) algae

Quizplus · Accepted Answer

Analysis of genomes of modern species suggests that the first cells were similar to prokaryotes, which are single-celled organisms lacking a nucleus and other membrane-bound organelles. This is supported by the fact that modern bacteria and archaea, both types of prokaryotes, are the most genetically similar to the ancestors of all cellular life.

Analysis of Genomes of Modern Species Indicates That the First