Biology 9th Edition by Eldra Solomon,Linda Berg ,Diana Martin

Exercise 5

EVOLUTION LINK. Write short paragraphs explaining each of the following statements: a. Natural selection chooses from among the individuals in a population those most suited to current environmental conditions. It does not guarantee survival under future conditions. b. Individuals do not evolve, but populations do. c. The organisms that exist today do so because their ancestors had traits that allowed them and their offspring to thrive. d. At the molecular level, evolution can take place by the replacement of one nucleotide by another. e. Evolution is said to have occurred within a population when measurable genetic changes are detected.