Wendy added the same amount of water to two plants of the same variety. she placed them in the sun and added fertilizer to one plant but not to the other. she recorded the height of the plants after a week. what is the independent variable in the study? time fertilizer height of plant volume of water

Transposon can cause mutations in genes at or near the site of transposon insertion. it is possible for these elements to transpose away from their original site, causing a reversion of the mutant phenotype. in some cases, however, even more severe phenotypes appear when these elements excise from this site, due to events at or near the mutant allele. what might be happening to the transposon or the nearby gene to create more severe mutations?