21. How is natural selection in the evolution of long necks in giraffes best explained? a. Shorter-neck giraffes were killed by long-necked giraffes b. Giraffes stretched their neck to reach the tops of trees, leading to a longer neck c. Giraffes with longer necks survived because they could more easily reach their food d. Long-necked giraffes only mated with other long-neck giraffes e. None of the above
21. How is natural selection in the evolution of long necks in giraffes best explained? a. Shorter-neck giraffes were killed by long-necked giraffes b. Giraffes stretched their neck to reach the tops of trees, leading to a longer neck c. Giraffes with longer necks survived because they could more easily reach their food d. Long-necked giraffes only mated with other long-neck giraffes e. None of the above
Biology (MindTap Course List)
11th Edition
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Chapter1: A View Of Life
Section: Chapter Questions
Problem 6TYU: Darwin suggested that evolution takes place by (a) mutation (b) changes in the individuals of a...
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