DNA passed to and from all kinds of organisms, even across kingdoms, has helped shape the tree of life, to a large and undisputed degree in microbes and also unexpectedly in multicellular fungi, plants, and animals.
Christie Wilcox, “Horizontal gene transfer happens more often than anyone thought” at The Scientist (July 5, 2022)
Well, of course, anything that horizontal gene transfer did, Darwinian evolution did not do. And if HGT is quite common, it’s going to be much harder to tell what Darwinism actually did.
You may also wish to read: Horizontal gene transfer: Sorry, Darwin, it’s not your evolution any more