TIL DNA transfer does not only occur "vertically", that is, from parent to progeny. There is also a form of DNA transfer known as horizontal or intracellular DNA transfer, which consists in a piece of DNA being transferred from the genome of one cell to that of another—including between species.
en.wikipedia.orgSubmitted by DioriteLover t3_10qjdzm in todayilearned
seminote t1_j6qf8nk wrote
In fact most of our DNA is junk code from other organisms. Mainly viruses