Exam 2 Flashcards
Recent discoveries disproving
Chimps —-> Humans
- Hobbit 2004
- Stranger from Siberia 2010
- Ardi published 2009
- Hybridization with Neanderthals
3 things that show all humans are African
- Closest extant relatives in Africa
- Mitochondrial Eve existed in Africa ~ 100-200k YA
- Most fossil hominids are found in Africa
Main Mammalian Clades
- Monotremes
- Non-monotremes
A. Placentals
B. Marsupials
Tetrapod Clades
- Reptiles
- Mammals
- Amphibians
Reptile adaptations to dry land
- Waterproof skin
- Waterproof eggs
- Waterproof sex
Reptile Clades
- Lizards and snakes
- Turtles
- Dinosaurs (including birds)
Amphibian Clades
- Salamanders
- Frogs
- Legless Amphibians
Derived Characteristics
Define Monophyletic groups
Notochord
Present in embryos, long,flexible rod, evolved for swimming
Dorsal hollow nerve chord
Develops into a spinal chord and brain in adult humans
Tail extends beyond anus
Muscular and adapted for locomotion especially in fishes
Gill slits
Allow for filter feeding in lancelets; modified for gills
Chordate Lineages
- Vertebrates
- Tunicates
- Lancelets
Vertabrates
Rachel- Reptiles Met- mammals All- amphibians Leonardtown- lungfish Chicks- coelacanths Racing- ray-finned fish Cocky- cartilage fish Ladies- lampreys
Animalia
Spongebob- sponges
Jelly fishing- jellies
Comb it out- comb jellies
Accel away- accels
Rachel- Rotifera Ferrara- flat worms Eats- earthworms Moldy- molusks Asahi- Arthropoda Nematoads
E- Echinodermata
C- chordata
Echinodermata
Florida- feather sponges Coast- cucumbers University- urchins Beat- brittle/basket stars Second- sea stars
Primates
People Never- new world Openly- old world Gain- gibbon Obsessive- orang Guilt- gorilla Because- bonobo Crackers- chimp Hate- human