Chapter 10 Flashcards
Evolution, Behavior, and Natty Select
Actions performed by an organism in response to its environment.
Behavior
Genetic change of a population over time.
Evolution
Those who survive natural selection.
The fittest
This and Greek are what language scientific names are in.
Latin
Nerves that are sensitive to stimulating energy.
Receptors
The study of animal behavior.
Ethology
A random change in DNA.
Mutation
The formation of a new species.
Speciation
The largest taxonomic unit.
Domain
The receptor responsible for sensing the body’s position.
Muscle
What is natural selection?
When an organism can survive long enough to reproduce.
What are random mutations?
Traits that occur by chance.
When certain alleles become more or less common in a population, this is called:
Genetic drift
_____ is a group of organisms that consistently interbreed.
Population
Why are some nerve endings on the body more sensitive than others?
Not all body parts are used to gather sensory info.
Different organisms can be related through their…
Evolutionary histories
Left over traits that no longer serve a purpose:
Vestigial structures
Anatomy of different organisms that serve the same purposes.
Analogous structures
The study of distributed species around the world.
Biogeography
What are the geologic eras in order from youngest to oldest?
Cenozoic, Mesozoic, and Paleozoic
When did Europe and North America break apart into their own continents?
During the Mesozoic era
How does an organism get fit?
By adapting
When the trait of an organism changes drastically in one direction.
Directional selection
When the average population stabilizes a trait:
Stabilizing selection
