It is difficult to determine the age of an ancient human patrilineal ancestor because the mutation rate of Y chromosomes is high
Indicate whether the statement is true or false.
Answer: T
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Which of the following is not an ape?
A. the bonobo B. the gelada C. the gibbon D. the gorilla
Boas conducted most of his fieldwork __________
a. in the southwestern United States b. in central Mexico c. in the Caribbean d. on the northwest coast of North America
In the next four decades, almost all the growth in urban populations is expected to occur:
a. In South America. b. In Europe. c. In the Southern Hemisphere. d. In the wealthiest nations. e. In the world's poor nations.
A cell's plasma membrane __________
a. separates the genetic material from the rest of the cell b. is a fluid-filled space within a cell c. contains a number of structures essential to cellular function d. none of these