BIO 202 Arizona State University -BIO 202 Exam 1 correctly answered

BIO 202 Arizona State University -BIO 202 Exam 1 correctly answered1. _________ 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