Chimpanzees, chickens, cows, and human beings all share a gene for an insulin hormone.

Question

What does this suggest? (1 point)
• This suggests that all of these species share a common ancestor.
• This suggests that three 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.