BIO 181 North Carolina State University -BIO 181 Exam 1 (Final Review) updated already passed

BIO 181 Exam 1 (Final Review)Which of the following biological organizations of hierarchical ordered complexity of life is in the correct order? - correct answer Cells, organisms, communities, biosphere. In 2006, eight grizzly bears were found to have DNA traced to one female polar bear. These bears were called, "grolar bears." This is an example of... - correct answer Gene Flow A mule is a hybrid of a donkey and a horse. Mules are sterile and cannot produce offspring, so the only way to make more mules is to mate more donkeys and horses. - correct answer Postzygotic Blue-footed boobies (a species of bird) select mates after an elaborate courtship display. They will not mate with other boobies. - correct answer Prezygotic The American toad mates in the early part of summer, while the Fowler's toad mates later in the season. - correct answer Prezygotic Different species of fruit flies in the genus Rhagoletis lay their eggs on different host species. Adults return to lay eggs on the hosts from which they emerged. - correct answer Prezygotic On a small island, three separate phenotypes of a single species of cherry tree occur—small, medium, and large seeds. A small population of mice is introduced to the island. The mice are the only organisms that eat cherries on the island. When they eat a cherry, they digest it and excrete the pit or seed completely undigested at another location. After careful analysis, it is concluded that the mice chose to eat the larger cherries with medium and large seeds and left the smallest cherries uneaten. What kind of selection, if any, is occurring here? - correct answer Directional Selection The only source(s) of new genetic variation (material) is / are____________ - correct answer Mutations Evolutionary changes within a species are most accurately referred to as: - correct answer Microevolution