Concept explainers
Introduction: The humans are classified into three types based on the transition of external features and adaptability to the environment. They are Homo. Erectus, archaic Homo sapiens and modern Homo sapiens.
Explanation of Solution
Correct answer: Option d. Reduction in skeletal robusticity.
Reasons for the correct answer:
The archaic Homo sapiens is the first of human species that evolve locally from early Homo erectus population. They consist of mixture of Homo erectus and Homo sapiens characteristics. The reduction in the robusticity of skull and skeleton differentiates the archaic Homo sapiens from Homo erectus.
Option d. is given as “reduction in skeletal robusticity”.
Hence option d is correct.
Reasons for the incorrect answers:
Option a. is given as “presence in Asia and Europe”. The archaic Homo sapiens and Homo erectus distributed over Asia, Africa, and Europe. Hence, option a is incorrect.
Option b. is given as “loss of large browridges”. The loss of large browridges occurs in the modern Homo sapiens. Hence, option b is incorrect.
Option c. is given as “development of a projecting chin”. The development of projecting chin occurs in modern Homo sapiens. Hence, option c is incorrect.
Therefore, options a), b), and c) are incorrect.
Thus the reduction in skeletal robusticity distinguishes early archaic Homo sapiens from Homo erectus.
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