BIO 202 Exam 1 Questions with 100% Correct Answers

1. _________ gametes are formed by _________ in a diploid organism. Correct Answer Haploid, meiosis The earth formed 4.55 billion years ago, but living organisms did not emerge for another billion years (3.5 BYA). Correct Answer True It is thought that the first macromolecule in protobionts was RNA because Correct Answer RNA can replicate itself and synthesize proteins. The Miller and Urey experiment showed Correct Answer How nucleotides and amino acids could be produced prior to the existence of cells Nucleotides were polymerized to form RNA Correct Answer . On clay particles A protobiont Correct Answer Has an internal environment that can differ from the external environment. Selection against smaller billed finch individuals is an example of Correct Answer Directional selection. Balancing selection Correct Answer All of the above . Male elephant seals defend a territory and are the only potential mate for females in that territory. This is an example of Correct Answer Intrasexual selection A quantitative trait Correct Answer Can be influenced by the environment Prezygotic isolating mechanisms occur Correct Answer Before an attempted mating Natural and sexual selection are the only mechanisms of evolution Correct Answer false Evolution is Correct Answer Change in the genetic composition of a population over time Peter and Rosemary grant used the positive relationship between parent beak depth and offspring beak depth to verify that Correct Answer The size of beaks was heritable Some proteins are capable of replicating themselves. Correct Answer True The study of biological diversity and evolutionary relationships among organisms is Correct Answer Systematics