Concept explainers
Introduction : The remains or traces of ancient life which have been preserved over time by natural processes are known as fossils.
Evolution is the change in traits of a species over generations, which is mainly dependent on the natural selection.
Answer to Problem 27A
Correct answer :
The correct answer is option (a), A. africanus
Explanation of Solution
Explanation/justification for the correct answer :
Option (a) A. africanus is a genus that had lived between 3.3 and 2.3 mya. It is the first undisputed member of the hominin group.
Explanation for incorrect answer :
Option (b) H. antecessor : It is a genus that had lived 1.2 million and 0.8 million years ago.
Option (c) H. ergaster : It is a genus that had lived 1.8 to 1.2 million years ago. It is the third member of the homo group.
Option (d) H. habilis : It is a genus that had lived 2.4 to 1.4 million years ago. It is the first member of the genus homo.
The first undisputed member of the hominin group is A. africanus .
Chapter 16 Solutions
Biology Illinois Edition (Glencoe Science)
Additional Science Textbook Solutions
Biology: Life on Earth with Physiology (11th Edition)
Microbiology: An Introduction (13th Edition)
Microbiology: An Introduction
Human Anatomy & Physiology (2nd Edition)
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education