Many transposons move within a genome by replicative mechanisms (such as those shown in Figure 924B). They

Question:

Many transposons move within a genome by replicative mechanisms (such as those shown in Figure 9−24B). They therefore increase in copy number each time they transpose. Although individual transposition events are rare, many transposons are found in multiple copies in genomes. What do you suppose keeps the transposons from completely overrunning their hosts’ genomes?

Figure 9−24B