The Jak1 gene encodes a transcription factor that binds to the promoter region of another gene. The Jak1 gene diagramed below has only one promoter and is located in a region of the genome containing no other genes. You discover a mutation in the Jak1 gene that results in a protein with altered binding affinity. This mutation could be located: True False A, in the promoter region. B, within the first exon. C, at a splice site. D, downstream of the last exon. <

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.