lecture 25 Amniotes part 3 Flashcards
What are the most well known members of the Order Primates?
monkeys apes and humans
What is the defining characteristic of Primates?
They have a thumb and their toes are widely separated
They have flat nails
They have forward facing eyes
They have pentadactyl appendages
What is an example of a primarily diurnal anthropoid?
Monkeys and apes
also humans
Where are Lemurs now and how did they get there?
They are from Madagascar and go there by rafting on mats of vegetation from mainland Africa
new world Monkeys are mostly ________
Arboreal
Old world monkeys were mostly _______&______
Arboreal and terrestrial
what are the Hominidae?
the great apes
What are homo?
Humans
What are Pongo?
orangutans
What are pan?
chimps
What are gorilla
gorillas
What are the closest living relatives to homo?
Chimps and bonobos
How genetically close are pan to homo?
99%
only 19 regulatory genes different
What are the main characteristics of Humans?
Bipedalism
Flexable opposable thumb
large brain
What is the only extant species of Homo?
H. sapiens
How far back was bipedalism as thing for homo?
3.5 mya
The pelvic structire of Ardipithecus ramidus suggests what?
They walked upright too
Where is the earliest evidence of Homo sp?
in Africa
we think they made stone tools
What is cool about homo ergaster?
Smaller teeth
may have cooked food
Who was the first to leave Africa
homo erectus
they went to Asia
What are the is the next more recent homo?
Homo neanderthalensis
What were neanderthals named after?
a cave
True or false:
some people have a hybridization of H.sapiens and H. neanderthalensis
True
Are humans morphologicaly diverse>?
yes
is the idea of clear-cut races outmoded?
yes
