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Which of these best illustrates natural selection?
Charles Darwin
geographic isolation
differences in reproductive rates
chromosome number
genetic variation
It will reduce genetic diversity.
An organism with favorable genetic variations will tend to survive and breed successfully.
A wide diversity of species existed.
A small population of chimpanzees lives in a habitat that undergoes no changes for a long period. How will genetic drift probably affect this population?
Charles Darwin
geographic isolation
differences in reproductive rates
chromosome number
genetic variation
It will reduce genetic diversity.
An organism with favorable genetic variations will tend to survive and breed successfully.
A wide diversity of species existed.
Which of these would have the least effect on natural selection in a subspecies of giraffes that is geographically isolated from other subspecies of giraffe
Charles Darwin
geographic isolation
differences in reproductive rates
chromosome number
genetic variation
It will reduce genetic diversity.
An organism with favorable genetic variations will tend to survive and breed successfully.
A wide diversity of species existed.
Earth has undergone some catastrophic changes from time to time. Which of these most likely explains why life on Earth continued following these catastrophes?
Charles Darwin
geographic isolation
differences in reproductive rates
chromosome number
genetic variation
It will reduce genetic diversity.
An organism with favorable genetic variations will tend to survive and breed successfully.
A wide diversity of species existed.
The scientist who published the booh Origin of Species and proposed the theory of natural selection was
Charles Darwin
geographic isolation
differences in reproductive rates
chromosome number
genetic variation
It will reduce genetic diversity.
An organism with favorable genetic variations will tend to survive and breed successfully.
A wide diversity of species existed.
A single species of squirrel evolved over time into two species, each on opposite sides of the Grand Canyon. This change was most likely due to
Charles Darwin
geographic isolation
differences in reproductive rates
chromosome number
genetic variation
It will reduce genetic diversity.
An organism with favorable genetic variations will tend to survive and breed successfully.
A wide diversity of species existed.
Fossil evidence suggests that a number of members of one fish species from an ancient lake in Death Valley, California, became several isolated species. Each of these new species lived in a different pond. Which of the following best explains the cau
Charles Darwin
geographic isolation
differences in reproductive rates
chromosome number
genetic variation
It will reduce genetic diversity.
An organism with favorable genetic variations will tend to survive and breed successfully.
A wide diversity of species existed.
A small portion of a population that is geographically isolated from the rest of the population runs the risk of decreased
Charles Darwin
geographic isolation
differences in reproductive rates
chromosome number
genetic variation
It will reduce genetic diversity.
An organism with favorable genetic variations will tend to survive and breed successfully.
A wide diversity of species existed.
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