You're right! Between plasmids and viruses, there's lots of ways that DNA can get moved around on the microscopic scale that you wouldn't expect when your intui

You're right! Between plasmids and viruses, there's lots of ways that DNA can get moved around on the microscopic scale that you wouldn't expect when your intuition is concerned with multicellular organisms like us. It's sort of a balance. Multicellular organisms get a lot of benefits that single-celled organisms don't, but in exchange, multicellular organisms give up the plasticity to improve themselves on demand by aquiring new DNA to better fit their environment.