23. Hominids

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Last updated 2:09 PM on 9/19/26
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18 Terms

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Darwinism

The theory of evolution through natural selection, proposed by Charles Darwin.

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Theory of Natural Selection

Evolution occurs through natural selection, where organisms better adapted to their environment are more likely to survive and reproduce.

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Natural Selection Over Generations

Favorable traits become more common in a population over generations because individuals with those traits are more likely to survive and reproduce.

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Lamarckism

The theory that organisms can pass traits acquired during their lifetime to their offspring.

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Theory of Inheritance of Acquired Characteristics

Lamarck's theory that organisms acquire traits through their needs and the use or disuse of traits, and these acquired traits can be passed to offspring.

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Use and Disuse

The Lamarckian idea that frequently used traits become stronger or more developed, while unused traits become weaker or reduced.

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What is the family of humans?
Hominidae
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What is the subfamily of humans?
Homininae
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What is the tribe of humans?
Hominini
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What is the subtribe of humans?
Hominina
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B. Hominidae → Homininae → Hominini → Hominina

Which taxonomic classification correctly represents the human lineage from family to subtribe?

A. Homininae → Hominidae → Hominini → Hominina
B. Hominidae → Homininae → Hominini → Hominina
C. Hominidae → Hominini → Homininae → Hominina
D. Hominina → Hominini → Homininae → Hominidae

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Hominins
Modern humans and all extinct ancestors are more closely related to humans than to chimpanzees. The evolutionary period from approximately 7 million years ago (mya) to the present.
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Hominin Characteristics
Key traits include bipedalism, larger brains, smaller teeth, and increasing tool use over time.
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Genus Homo
A genus of hominins that includes modern humans and extinct human species, characterized by significant evolutionary advances. Approximately 2.4 million years ago (mya) to the present.
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Genus Homo Characteristics
Larger brains, more advanced tool use, and increasingly complex cultural behaviors.
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Homo habilis
An early Homo species associated with early tool use and increased brain size.
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Homo erectus
A Homo species associated with larger brains, more advanced tools, and major developments in human evolution.
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Homo sapiens
The species of modern humans.