7/9/2013 3:17:00 PM
most recent common ancestor (MRCA) for a given group(s), given a
Human shared MRCA with …
chimps and bonobos
gorillas (MRCA fo all great Afircan apes… is this right?)
orang utans (MRCA of all great apes)
Gibbons (MRCA of all apes)
Old world monkeys then new world monkeys
Lemurs and Lorises (MRCA of all primates)
Rodents and rabbits
Laurasiatheres (i.e. bats, insectivora, carnivora hippo)
Monotremes (mammals but lay eggs; MRCA of ALL MAMMALS)
Reptiles (including birds b/c snakes and lizards have a MRCA with birds i.e.
than with turtles)
Amphibians (MRCA of all terapods)
Lungfish, coelacanths, ray-finned fish, sharks, jawless fish (MRCA of
Archaea (MRCA of ALL EUK)
Bacteria (MRCA with bas is LUCA)
why the idea that “humans are descended from chimps” is
Humans SHARE a MRCA with chimps; we are like their cousins! But we did
not DESCEND from them
order of main branching events in tree of life (dates not testable).
See Lecture Outcome 1
cause of global catastrophe associated with mass extinction 65 mya METEOR which changed temperature and availability of light. Half of species
alive on earth (including dinosaurs) went extinct.
relative proportion of protostome vs. deuterostome species.
- Together with the deuterostomes and a