Developing the Theory/Origin
Support for Evolution
More Support for Evolution
Support for Evolution Again
Adaptation
100
The process of directed breeding to produce offspring with desired traits.
What is artificial selection?
100
The idea that all organisms on Earth have descended from a common ancestor.
What is the theory of evolution?
100
The organism whose fossils show birds retained several dinosaur features.
What is the Archaeopteryx?
100
Primitive features that do not appear in anccestral forms.
What are ancestral traits?
100
Morphological adaptations that allow species to blend in with their environments.
What is camoflage?
200
The type of animal breeders that helped dArwin understand how new species could appear.
What are pigeon breeders?
200
Evidence that shows ancestry and patterns of evolution.
What are fossils?
200
Shows record of organisms between species?
What are transitional fossils?
200
Newly evolved features that do not appear in the fossils of common ancestors.
What are derived features?
200
A measure of how effectively a trait contributes to reproductive success.
What is fitness?
300
Ther result of artificial selection over time.
What is the production of a new species?
300
Anatomically similar stuctures inherited from a common ancestor.
What are homologous structures?
300
The theory that predicts that an organism's body parts are more likely to be modifications of ancestral body parts than entirely new features.
What is evolution?
300
For example, a snake pelvis.
What is a vestigial structure?
300
A morphological adaptation that improves fitness through confusion.
What is mimicry?
400
The process by which competitors less equipped for survival die.
What is natural selection?
400
The study of patterns of migration that helped Darwin form his theory.
What is biogeography?
400
The stage of development in vertebrates that shows evolutionary relationships.
What is an embryo?
400
The relationship between a bald eagle wing and a may beetle wing?
What are analogous structues?
400
Unavoidable consequences of prior evolutionary change that do not increase evolutionary success have been compared to this.
What is a spandrel?
500
The mechanism by which evolution takes place.
What is natural selection?
500
Explains the connection between bird wings and reptile forelimbs.
What are homologous structures?
500
Over time vestigial features will become this comparable size.
What is smaller?
500
Cytochrome C helped scientists to show organisms share this.
What is common ancestors?
500
Human adaptations that force delivery of helpless offspring.
What are upright posture and big brains?
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