Lab 13 Write Up

Lab 13 Write Up - Drew Rasmussen Penny Louka Biology 191L...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Drew Rasmussen Penny Louka Biology 191L December 4, 2010 Lab 13: Human Evolution: Lab Write Up 1. Monkeys have rotatable wrists and forearms, whereas apes and humans rotate about the shoulder. This was seen when the Gibbons were swinging with rapid speed from tree to tree. They can do this because of the rotation allowed by their wrist anatomy. 2. The foot anatomy of humans versus their primate ancestors is a very clear indicator of evolution. As humans, we have big toes pointing forward like the rest of our toes. This allows to walk upright and push off with our big toe, thus propelling us forward. Our primate relatives have their “big toe” pointing off laterally which allows them to grab trees and branches while climbing and swinging. Humans also have shorter forearms than their primate relatives which makes us incapable of moving quickly on all fours. As a result humans have grown taller than their primates and we now walk up right with a straighter spine.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

Lab 13 Write Up - Drew Rasmussen Penny Louka Biology 191L...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online