Evolution Practice Quiz

*1. Mutations within a DNA sequence are
natural processes that produce genetic diversity
natural processes that always affect the phenotype.
unnatural processes that always affect the phenotype.
unnatural processes that are harmful to genetic diversity.

*2. 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. Some family groups have survived and others have died out. The groups that survive probably have
interbred with other species.
inherited some advantageous variations.
found new places on the island to live.
been attacked by more predators.

*3. Earth has undergone some catastrophic changes from time to time. Which of these most likely explains why life on Earth continued following these catastrophes?
Dominant species had a slow mutation rate.
Many species filled the same niche.
A strong species had many different characteristics.
A wide diversity of species existed.

*4. 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?
It will accelerate the appearance of new traits.
It will promote the survival of chimpanzees with beneficial traits.
It will increase the number of alleles for specific traits.
It will reduce genetic diversity.

*5. 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
higher mutation rates on one side.
low genetic diversity in the initial population.
the isolation of the two groups.
differences in reproductive rates.

*6. chart
According to this information, which group demonstrated the greatest biodiversity during the Cretaceous period?
dinosaurs
crocodilians
snakes
lizards


Score =
Correct answers:

*taken from 2003, 2004, 2005 CDE Released Test Questions-http://www.cde.ca.gov/ta/tg/sr/css05rtq.asp
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