Select whether the description is for Vertebrates or Invertebrates. insects, spiders, snails, and worms

most types of pets

more of them on Earth than the other group

have simpler body systems

have more-complex body systems

fish, birds, reptiles, amphibians, and mammals

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?