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BIO 121 Exam 1 Review Spring 2024
- Exam (elaborations) • 4 pages • 2024
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BIO 121 Exam 1 Review Spring 2024 
 
Evolution 
The gradual change in a species over time. 
Adaptation 
When the heritable trait increases an individuals fitness in a particular environment. 
Ancestral trait 
Is a character that existed in an ancestor. 
Derived trait 
Is one that is a modified form of the ancestral trait, found in a descendants. 
Vestigial trait 
A reduced or incompletely developed structure that has no (or reduced) function (e.g. human tailbone or wisdom teeth). 
Homologous str...
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BIO 121 Exam 1 Review Spring 2024
- Exam (elaborations) • 4 pages • 2024
-
- $11.79
- + learn more
BIO 121 Exam 1 Review Spring 2024 
 
Evolution 
The gradual change in a species over time. 
Adaptation 
When the heritable trait increases an individuals fitness in a particular environment. 
Ancestral trait 
Is a character that existed in an ancestor. 
Derived trait 
Is one that is a modified form of the ancestral trait, found in a descendants. 
Vestigial trait 
A reduced or incompletely developed structure that has no (or reduced) function (e.g. human tailbone or wisdom teeth). 
Homologous str...
-
BIO 121 Exam 1 Review Spring 2024 Questions and Answers | BIO 121 Exam 1 Review Spring 2024
- Exam (elaborations) • 4 pages • 2024
-
- $11.49
- + learn more
Evolution 
The gradual change in a species over time. 
Adaptation 
When the heritable trait increases an individuals fitness in a particular environment. 
Ancestral trait 
Is a character that existed in an ancestor. 
 
 
 
Derived trait 
Is one that is a modified form of the ancestral trait, found in a descendants. 
Vestigial trait
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