Which of these provides evidence of the common ancestry of all life?
A) ubiquitous use of catalysts by living systems
B) near universality of the genetic code
C) structure of the nucleus
D) structure of cilia
E) structure of chloroplasts

Question

Quizplus · Accepted Answer

The near universality of the genetic code - the fact that nearly all organisms use the same code to translate DNA into proteins - strongly suggests a common ancestry of all life. This is because it would be highly unlikely for such a complex and specific system to evolve independently in multiple lineages.

Which of These Provides Evidence of the Common Ancestry of All