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Which of these best illustrates natural selection?
An organism with favorable genetic variations will tend to survive and breed successfully.
biological diversity.
genetic variation
It will reduce genetic diversity.
differences in reproductive rates
geographic isolation
inherited some advantageous variations.
A wide diversity of species existed.
If a paleontologist finds fossils of many different species existing in the same area at approximately the same time, the paleontologist can conclude that the ecosystem in this area had a high degree of
An organism with favorable genetic variations will tend to survive and breed successfully.
biological diversity.
genetic variation
It will reduce genetic diversity.
differences in reproductive rates
geographic isolation
inherited some advantageous variations.
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
An organism with favorable genetic variations will tend to survive and breed successfully.
biological diversity.
genetic variation
It will reduce genetic diversity.
differences in reproductive rates
geographic isolation
inherited some advantageous variations.
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?
An organism with favorable genetic variations will tend to survive and breed successfully.
biological diversity.
genetic variation
It will reduce genetic diversity.
differences in reproductive rates
geographic isolation
inherited some advantageous variations.
A wide diversity of species existed.
A species of finch has been studied on one of the geographically isolated Galapagos Islands for many years. Since the island is small, the lineage of every bird for several generations is known. This allows a family tree of each bird to be developed.
An organism with favorable genetic variations will tend to survive and breed successfully.
biological diversity.
genetic variation
It will reduce genetic diversity.
differences in reproductive rates
geographic isolation
inherited some advantageous variations.
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?
An organism with favorable genetic variations will tend to survive and breed successfully.
biological diversity.
genetic variation
It will reduce genetic diversity.
differences in reproductive rates
geographic isolation
inherited some advantageous variations.
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
An organism with favorable genetic variations will tend to survive and breed successfully.
biological diversity.
genetic variation
It will reduce genetic diversity.
differences in reproductive rates
geographic isolation
inherited some advantageous variations.
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
An organism with favorable genetic variations will tend to survive and breed successfully.
biological diversity.
genetic variation
It will reduce genetic diversity.
differences in reproductive rates
geographic isolation
inherited some advantageous variations.
A wide diversity of species existed.
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