Which of These Provides Evidence of the Common Ancestry of All

Question

Which of these provides evidence of the common ancestry of all life?
A) near universality of the genetic code
B) structure of the nucleus
C) structure of cilia
D) structure of chloroplasts

Accepted Answer

The near universality of the genetic code across different organisms suggests a common ancestry for all life. This is because the genetic code, which translates DNA sequences into proteins, is remarkably consistent across a wide range of organisms, from bacteria to humans, indicating that all life forms evolved from a common ancestor that shared this genetic code.