In reverse genetics, what is the correct order in which the experimenter proceeds? A. identification of a gene of interest followed by screening for mutations in that gene and studies of the phenotypes caused those mutations. B. selection of mutants with a phenotype of interest and then mapping to locate the effected gene(s) C. silencing the genes in question using RNAi, followed by mapping to locate the gene D. random mutagenesis, followed by observation of offspring for newly acquired traits

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.