What are some density-dependent factors that affect humans at higher population densities? How have these been
addressed in industrial societies?
What will be an ideal response?
ANSWER: Competition for all resources increases at high population densities. This leads to an
increased mortality rate. Disease, violence, and famine are some of the factors that worsen
at high population densities. In industrial societies, sanitation has decreased death by
disease. Poverty has been addressed less successfully in industrialized nations and can be
viewed as an outcome of competition for resources. War, too, is almost invariably a result
of competition for resources, although fighters are often recruited using religious or
cultural propaganda.
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Which of the following is NOT true about the Hardy-
Weinberg formula? a. It is helpful to doctors and genetic counselors. b. It can predict the carrier frequency of alleles known to cause genetic disorders. c. It can explain why some individuals absorb too much iron from their food. d. The math is useful in research on the effects of a mutant BRCA2 allele. e. It can predict that the frequency of hemochromatosis carriers in Irish populations is 0.24
RFLPs arise due to
A) changes in the number of tandem repeats. B) base changes that add or delete restriction enzyme recognition sites. C) addition or deletion of bases between restriction enzyme recognition sites. D) B and C only E) All of these
The suprachiasmatic nuclei are found in the _____
A) hypothalamus B) epithalamus C) amygdala D) Broca's area
Translation occurs in _____.
A) the nucleus B) a DNA molecule C) a ribosome D) a tRNA molecule