Question

Scientists claim that all organisms evolved from a common ancestor. Which

statement provides evidence for that claim?
A. Mitochondria and chloroplasts contain DNA.
B. The oldest fossils on Earth are single cells.
C. Organisms from all three domains use a common genetic code.
OD. Organic molecules can be made using inorganic precursors.

Answer 1

The statement that provides evidence for the claim that all organisms evolved from a common ancestor is that organisms from all three domains use a common genetic code.

Step-by-step explanation:

The statement that provides evidence for the claim that all organisms evolved from a common ancestor is C. Organisms from all three domains use a common genetic code. The genetic code is a set of rules that determines how DNA sequences are translated into proteins. The fact that all organisms, regardless of their domain (Bacteria, Archaea, and Eukarya), use the same genetic code suggests a common ancestry.

Additionally, the statement in option A - Mitochondria and chloroplasts contain DNA - also provides evidence for common ancestry. Mitochondria and chloroplasts are organelles found within eukaryotic cells and they have their own DNA. This suggests that they were once free-living prokaryotic organisms that were engulfed by a eukaryotic cell.

However, option C provides a more direct and comprehensive evidence for common ancestry since it encompasses all living organisms.

Learn more about evidence for common ancestry