Question

question 3
10 pts
for a very long time, doctors believed the gallbladder in humans did not have a useful purpose. recently it has been discovered the gallbladder helps prevent colon cancer. with this discovery, is the gallbladder still considered a vestigial structure?
yes
no
question 4
10 pts
two organisms seem very similar. scientists find these organisms are not related but do live in environments that are similar. what type of evolution is this?
convergent evolution
divergent evolution

Explanation:

For Question 3:

A vestigial structure is defined as a body part that has lost most or all of its original function through evolution. The discovery that the gallbladder helps prevent colon cancer shows it has an active, useful function, so it no longer fits the definition of a vestigial structure.

For Question 4:

Convergent evolution is the process where unrelated organisms independently evolve similar traits or characteristics because they adapt to similar environments or ecological niches. Divergent evolution is when related organisms evolve different traits over time. The scenario describes unrelated organisms with similarities due to shared environments, which matches convergent evolution.

Answer:

Question 3: No
Question 4: Convergent Evolution