In small populations, gene frequencies can change drastically by chance alone. This phenomenon is called
A. density-dependent effects.
B. migration.
C. density-independent effects.
D. genetic drift.
Answer: D
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Which of the following places was the last to be colonized by humans?
A. Madagascar B. Australia C. United States D. Scandinavia E. New Zealand
The group of protists to which you are most closely related is:
A. the choanoflagellates B. slime molds C. Rhizaria D. Foraminifera E. Stramenopila
Chelicerae function as
A. eyes. B. fangs or pincers. C. jaws or mandibles. D. teeth. E. wings.
The presence of genes that encode many types of hemoglobin in mammals, but not in other vertebrates that evolved
earlier, is evidence of ____ of genetic material.
a. an inversion b. the duplication c. reciprocal translocation d. the deletion e. both duplication and deletion