ANT101H5 Lecture Notes - Lecture 5: Grooming Claw, Fovea Centralis, Foramen Magnum
Document Summary
Primates: our contemporary relatives & the basics of. The study of non-human primate biology & behavior- we are primates but not us here. Share a similar function, not similar structure or stages. Do not pass through similar stages during embryonic development. Organisms do not share a common ancestor. Structures possessed by 2 diferent organisms that arise in a similar fashion. Pass through similar stages during embryonic development. Organisms that share similar structure, and therefore a common ancestor- explains evolutionary relationship. Forward shifted foramen magnum- humans-upwards- dogs- sides. Post orbital bar (enclosed eye socket) next to eyes, encased---gap there for dogs. Retention of clavicle (collarbone)- allows your shoulders to swing- dogs have small ones. Reduction in the number of ofspring born at one time to a female. Longer period of infant dependency on the mother not many ofspring with exceptions when fathers take care of their children as well.
