Some ID supporters agree with universal common descent, but many ID supporters argue against the idea that all life shares a common ancestor.
So it appears that self-contained gene transposon “packages” permit transfer of genes from one species to another
How can you be certain, for instance, that you, horned lizards, and brook trout share a common chordate ancestor?
For a theory whose empirical strength is so great that it cannot be doubted, universal common descent certainly is doubted a lot.
Evolutionists have to propose, for instance, that Old World monkeys rafted across the Atlantic from Africa to South America on a natural raft.