The wild type eye color for humans is
A) brown.
B) green.
C) hazel.
D) pink.
A) brown.
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Declining amphibian populations are correlated with
a. habitat loss. b. introduction of new species. c. long-term changes in climate. d. fungal infections and parasitic diseases. e. all of these.
The number of different alleles for ABO blood types in the total human population is
a. 4. b. 6. c. 9. d. 2. e. 3.
Hydropower and wind power are similar in that both are
A) dependent in part on fossil fuels B) nonrenewable energy sources C) sources of environmental pollution D) renewable energy sources E) commonly used worldwide as power sources
Sister chromatid exchanges increase in frequency in the presence of X-rays, certain viruses, ultraviolet light, and certain chemical mutagens. In what autosomal recessive disorder is there known to be an increase in sister chromatid exchanges?
A) Harlequin syndrome B) cystic fibrosis C) achondroplasia D) Bloom syndrome E) Huntington's disease