You are analyzing a human pedigree for a new disease and discover that the disease occurs with the same frequency in both sexes and that 25% of the children from two unaffected heterozygous parents have the disease
This disease is displaying ____ inheritance.
A. autosomal recessive
B. autosomal dominant
C. sex-linked recessive
D. sex-linked dominant
A
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T-cell receptors can only recognize antigens on the surfaces of antigen-presenting cells; they cannot bind free antigen.
Answer the following statement true (T) or false (F)
A tariff which is set up as a percent of the value of the imported good is a(n)
a. Specific Tariff. b. Protective Tariff. c. Embargo Tariff. d. Ad Valorem Tariff.
The relationship between the fungi and algae in lichens is best described as
A. a possible controlled parasitism wherein the fungi withdraw food from the algae and the algae do not benefit from the association. B. a possible controlled parasitism wherein the algae are moistened and protected by the fungi, but the fungi do not benefit from the association. C. a simple cooperative mutualism between normally free-living strains. D. an endosymbiotic transfer of the chloroplasts of algae to the hyphae cells. E. a complete mixing of the genomes of the two groups at the cellular level.
During photosynthesis, plants convert light energy to chemical energy. This is an example of
A) increasing entropy. B) a spontaneous reaction. C) the second law of thermodynamics. D) chemical equilibrium. E) the first law of thermodynamics.