Mutations are the most important source of variety on which natural selection depends and operates. There are two forms of mutations,
A. both discovered by Mendel.
B. cancer-causing mutations and chromosomal rearrangement.
C. and both always result in phenotypic change.
D. and both occur only during the development of an individual.
E. called base substitution mutation and chromosomal rearrangement.
Answer: E
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According to the Immigrant Rights and Citizenship lecture, the children of illegal immigrants are not given citizenship upon birth by the American government
a. true b. false
Which of the following is NOT a feature of a hominin classification system?
a. it is based on genetic rather than morphological data b. it shows modern humans and chimpanzees to be more closely related to each other than either are to gorillas c. it has become less popular over the last two decades d. it separates gorillas and orangutans into separate families
Which one of the following is not true about Tibetan polyandry?
a. Polyandry eliminates sexual competition among brothers. b. Polyandry lowers the birth rate. c. Polyandry enables wealthier farmers to maintain their higher standard of living. d. Polyandry is often preferred by Tibetans.
The marriage of one woman to more than one man simultaneously is called
a. exogamy. b. endogamy. c. polygyny. d. polyandry.