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HomeHomework HelpbiologyVestigial Structures

Vestigial Structures

Vestigial structures are anatomical features or organs that have lost most or all of their original function through the course of evolution. These structures serve as evidence of an organism's evolutionary history and can provide insights into the adaptations of related species.

intermediate
2 hours
Biology
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Overview

Vestigial structures are fascinating remnants of our evolutionary past. They provide insight into how species have adapted over time and serve as evidence for the theory of evolution. Examples like the human appendix and the wings of flightless birds illustrate how certain traits can become less use...

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Key Terms

Evolution
The process by which different kinds of living organisms develop and diversify from earlier forms.

Example: Darwin's theory of evolution explains how species change over time.

Natural Selection
The process where organisms better adapted to their environment tend to survive and produce more offspring.

Example: Natural selection led to the development of the giraffe's long neck.

Anatomy
The branch of science concerned with the bodily structure of humans, animals, and other living organisms.

Example: Studying human anatomy helps us understand how our body functions.

Vestigial
Referring to a body part that has lost its original function through evolution.

Example: The human appendix is considered a vestigial organ.

Common Ancestry
The idea that different species share a common ancestor.

Example: Humans and chimpanzees share a common ancestor.

Adaptation
A trait that helps an organism survive and reproduce in its environment.

Example: Camouflage is an adaptation that helps animals avoid predators.

Related Topics

Natural Selection
The process by which organisms better adapted to their environment tend to survive and produce more offspring.
intermediate
Evolutionary Biology
The study of the evolutionary processes that produced the diversity of life on Earth.
advanced
Comparative Anatomy
The study of similarities and differences in the anatomy of different species.
intermediate

Key Concepts

evolutionnatural selectionanatomyfunction loss