21. Evolution by Natural Selection
Descent with Modification
21. Evolution by Natural Selection Descent with Modification
7PRACTICE PROBLEM
A researcher observes that the number of green beetles on a shrub was significantly higher than the number of red beetles. She concluded that the color of the beetles is ___________, because the green-colored beetles blended in with the green leaves and were not recognized by predators.
A researcher observes that the number of green beetles on a shrub was significantly higher than the number of red beetles. She concluded that the color of the beetles is ___________, because the green-colored beetles blended in with the green leaves and were not recognized by predators.