Biology B; Evolution Review Questions With Complete Solutions

What unexpected observation helped lead Darwin to develop the theory of natural selection? correct answer: Organisms on the Galápagos were similar to, yet different from, one another and from similar species in South America. Charles Darwin was influenced by Charles Lyell, who proposed that geological processes had reshaped Earth over long periods of time. Which unexpected finding during Darwin's voyage supported Lyell's ideas? correct answer: fossils of ocean organisms high in the Andes Mountains Why did the work of James Hutton influence Charles Darwin's later ideas? correct answer: Hutton proposed that Earth was much older than was previously believed. The best definition of natural selection is correct answer: the greater survival and reproduction of organisms with favorable variations than of organisms with unfavorable variations. A company develops a pesticide that kills 95% of all roaches it is sprayed on. If this pesticide is used commercially over an extended period of time, what will most likely occur? correct answer: The effectiveness of the pesticide will decrease over time due to natural selection. What does the principle of descent with