ANT101H5 Study Guide - Stereopsis, Fovea Centralis, Thumb
Document Summary
The study of non-human primate biology and behavior homologies: what we share with primates; something that is very similar in different organisms that share a common ancestorbut the function is very different (bat wings and human hands) Analogies: 2 structures that may have similar function but differs from common ancestors (squid eyes vs. human eyes) not relevant to ancestors relations all primates. Arboreal (lived in trees and generalized limbs) Depth of perception (stereoscopic vision: 3d vision) Also known as binocular vision (comes from forward facing eyes) Color vision: better version of depth of perception. Reduction in noseand rounder bigger fore head. Upright body (s-shaped spine)-c shaped spines in apes. Post orbital bar (enclosed eye socket-because eyes are important for life in trees) Important because shoulder is supported (swinging in treesrotation) Being able to grasp with thumb (opposable thumbs and sometimes toes) 1. strepsirhini (lemurs and lorises)- first to evolve in primates. Enclosed orbital barbut not complete bonny eye-socket.
