And knowing the rate at which neutral mutations accumulate in most animal species, the 50% figure suggests that the first asexual rotifer lived about 80m years ago twice as far back as the oldest known fossil bdelloid, a 40m-year-old specimen preserved in amber.
ECONOMIST: The longest ??headache?? ever
词源
1
bdelloid rotifer:
From bdelloid ?(“leech-like”), from Ancient Greek βδ?λλα ?(vdélla, “leech”).