Question

Question:
Chimpanzees, chickens, cows, and human beings all share a gene for an insulin hormone. What does this suggest? (1 point)  

Responses:  

This suggests that three of these species share a common ancestor.  

This suggests that all of these species share a common ancestor.  

This suggests that none of these species share a common ancestor.  

This suggests that two of these species share a common ancestor.

Answer 1

This suggests that all of these species share a common ancestor.

Explanation: The presence of a similar insulin gene in very different species indicates that the gene was inherited from a common ancestor and conserved through evolution.