What postcranial trait(s) differ between these two species? Group of answer choices Lucy has longer arms Lucy has shorter arms Lucy’s pelvis is more bowl shaped Lucy’s pelvis is less bowl shaped Lucy has a flared ribcage Lucy has a barrel shaped ribcage
Added by Evan S.
Step 1
- The question mentions "Lucy," which refers to the hominin species Australopithecus afarensis, known from the famous fossil skeleton "Lucy." Show more…
Show all steps
Your feedback will help us improve your experience
Supreeta N and 54 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Lucy vs. Ape vs. Human For this lab, you are going to compare Lucy (A. afarensis) to an Ape and a Human. You will first compare the pelvis and femur, and then you will compare the skulls. Lucy vs. Ape: - Illium Shape and Length - Orientation of the Iliac blades (do they curve inward, are they flat?) - Femur - Is there a bicondylar angle present? - What is the orientation of the head of the femur? Straight? Curved? - What is the size of the linea aspera? - Overall, which is Lucy more similar to? An ape or a human? What features support your conclusion? Skull Comparison: - Lucy vs. Human - Lucy vs. Ape
Supreeta N.
A feature in the early hominid was her apelike shoulders and forelimbs, but a pelvis that indicated that most of her body weight lay above her pelvis. Which best explains the fossil? Scientists call her Wise Human and her apelike structure indicates a common ancestor to chimpanzees. Scientists called her Lucy and her pelvis indicates she could walk upright. Scientists call her Handy Human and her apelike structure indicates she could use tools like chimpanzees. Scientists call her Upright Human because of the location of the pelvis.
Aparna S.
Which of the following skeletal features indicate(s) arboreal adaptations? - Eyes moved toward the side of the head - Long lower limbs - Reliance on the sense of smell - Curved fingers and toes Which of the following bones can provide evidence that a fossil animal was bipedal? - A hand with an opposable thumb - Humerus, fingers - Ear bones (related to balance) - Pelvis, femur, skull The cortical bone on the femur of ________ has a human-like pattern of thickness. - Ardipithecus kadabba - Orrorin tugenensis - None of these - Sahelanthropus tchadensis Imagine you have found a skull with an ape-size brain, sagittal crest, very large back teeth, and large cheekbones. Based on this information, this is most likely a specimen of: - A robust australopith. - Australopithecus africanus. - Australopithecus afarensis. - A modern human.
Rupsa S.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD