Which naturalist developed the same ideas about natural selection as Darwin, only 20 years later?
a. Darwin
b. Wallace
c. Jean Baptiste Lamarck
d. Cuvier
e. Charles Lyell
b
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An enhancer is a sequence that increases transcription of a gene ____
a. when its orientation is the same as that of the gene it controls b. when it is located just downstream of the promoter c. when it is located just upstream of the promoter d. when it is distant from the gene it controls e. independently of its position, orientation, and distance from a promoter
The old order Amish in Lancaster County is an
example of a population that underwent
a. a bottle neck. b. mutation. c. a founder effect. d. gene flow. e. genetic drift
The variable region of a light chain is indicated by ____
a. A b. B c. C d. D e. E
What is the result when a dendritic cell phagocytizes a microbe and processes it?
A) activation of the dendritic cell to become a plasma cell B) display of epitope-MHC I complexes on the surface of the cell C) suppression of the immune response to the microbe D) display of microbial fragments with CD8 glycoproteins E) display of microbial epitope-MHC II complexes on the cell surface