A(n) is a stretch of dna that can move from one location to another in the genome.

The cluster of developing cells from conception until birth is called an

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity

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.