The term genetic load refers to:
A. the sum of all the alleles in the population
B. the sum of all the alleles in an individual
C. the totality of recessive alleles in an individual's genotype
D. the totality of recessive lethal alleles in the population
D. the totality of recessive lethal alleles in the population
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In this chapter's "Focus on Globalization" section, scientists trace the global spread of anatomically modern humans by constructing a global phylogenetic tree based on mtDNA (mitochondrial DNA). What have we learned from this tree?
A. The Americas were settled by multiple haplogroups rather than by a single ancestral population. B. Modern humans spread out of Africa over a million years ago. C. There was only one wave of migration into North and South America. D. The Ice Age temporarily halted early human migrations. E. Human migrations were not influenced by global climate change.
The integration of the economies of most of the world's nations into a single exchange system is termed
a. internationalization of labor. b. market economy. c. market globalization. d. international monetary exchange.
This chapter offers a brief overview of kinship-related demographic changes in the United States and Canada. How have kinship arrangements changed? How do these changes relate to other cultural changes? Do you find any of the current trends surprising? If so, why?
What will be an ideal response?
A state has clearly defined territories
Indicate whether the statement is true or false.