Alleles for other genetic diseases also provide protection against malaria when only one copy of the allele is present. In what cell type would you expect these genes to be active?
A) liver cells
B) skin cells
C) red blood cells
D) lung cells
C
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An animal that does NOT maintain a relatively constant internal water concentration as the osmolarity of its environment varies is termed an
A. osmoconformer. B. osmoregulator. C. isoconformer. D. isoregulator. E. hydroconformer.
A view of Earth's history that attributes profound change to the cumulative product of slow but
continuous processes is
a. gradualism. b. homology. c. punctuated equilibrium. d. descent with modification. e. cladogenesis.
Terrestrial vertebrate richness is most strongly tied to
A) primary productivity. B) potential evapotranspiration. C) sea surface temperatures. D) altitude.
Which of the following is true of transcription factors?
A) They regulate the synthesis of DNA in response to a signal. B) They transcribe ATP into cAMP. C) They initiate the epinephrine response in animal cells. D) They control gene expression. E) They regulate the synthesis of lipids in the cytoplasm.