Scientists use _______ to produce many copies of small DNA fragments, such as those obtained at crime scenes or from fossils
a. transcription
b. polymerase chain reactions
c. nondisjunction
d. trisomies
e. random assortment of alleles
b
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Because they __________, the Zapatistas of Chiapas were particularly effective against the Mexican government
a. won militarily b. controlled considerable wealth c. utilized the Internet and mass media d. received help from the United States
A bottleneck is when:
A. there is a dramatic reduction in population numbers, followed by a further decrease in population such that the resulting small population has only the limited variation from the original population that made it through the bottleneck. B. there is a dramatic increase in population numbers, followed by a further increase in population such that the resulting large population varies from the original population that made it through the bottleneck. C. there is a dramatic reduction in population numbers, followed by an increase in population such that the resulting large population has only the limited variation from the founding population that made it through the bottleneck. D. there is a dramatic increase in population numbers, followed by a decrease in population such that the resulting population has only the limited variation from the original population that made it through the bottleneck.
A unilineal descent group whose members demonstrate their common descent from an apical ancestor is a(n)
A. family of procreation. B. extended family. C. lineage. D. clan. E. family of orientation.
The purpose of the performing arts is generally the same whether one is a participant or an observer
a. True b. False