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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332

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Chapter
Section
BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332
Chapter 26, Problem 5SQ
Textbook Problem
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The 3.6-million-year-old footprints left by bipedal walkers in Tanzania were probably made by _______.

  1. a. australopiths
  2. b. Neanderthals
  3. c. modem human
  4. d. Homo enctus

Summary Introduction

Concept introduction: Human beings are hominoids that belong to the lineage of dry-nosed primates. Human beings are modern apes. They are the most advanced placental mammals. They vary largely from their cousin, primate species. Hominins are the group of all extinct human-like species (and humans), where they showed the unique characteristics of bipedalism.

Explanation of Solution

Reasons for the correct statement:

The maximum available fossils are that of the australopiths. The australopiths were bipedals. Few footprints of australopiths that dated back to 3.6 million years obtained in Tanzania suggested that they were bipedals. The footprint might have been made by Australopithecus afarensis.

Option a. is given as “australopiths”.

As an australopith’s footprints were discovered in Tanzania (dating back to 3.6 million years), the correct answer is option a.

Reasons for the incorrect statements:

Option b. is given as “Neanderthals”.

Neanderthals’ extinct lineage is only 500,000 years old...

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