The phyletic gradualism model of evolution assumes that the rate of evolutionary change is characterized by:
A. abrupt changes followed by periods of no change at all
B. slow but constant change
C. rapid but constant change
D. alternating patterns of rapid and slow periods of change
B. slow but constant change
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In understanding the problems with attempts at human racial classification, why is it important to know the difference between genotype and phenotype?
A. The phenotypic traits typically used to classify humans into races go together as genetic units. B. Phenotypic similarities and differences always have a genetic basis. C. Although phenotypic characteristics may change, the genetic material of populations stays the same for a long time. D. Attempts at human racial classification have typically used genotypic traits like blood type as markers of common ancestry, and these traits are passed on from generation to generation in discrete bundles. E. Attempts at human racial classification have typically used phenotypic traits like skin color as markers of common ancestry, but many such traits do not reflect shared genetic material. Instead, they are often the result of different populations biologically adapting to similar environmental stressors in similar ways.
Social movements worldwide have adopted which term as a self-identifying label based on past oppression but now legitimizing a search for social, cultural, and political rights?
A. indio B. indigenous people C. mestizo D. autochthon E. freedom fighter
The structures found at El Paraíso were small, since people only lived there during a few seasons each year.
Answer the following statement true (T) or false (F)
Among which group is circumcision the central feature of a boy's rite of passage
into manhood? a) The Masai people of Kenya. b) Irish Catholics c) The Ju/wasi people of Botswana. d) Japanese.