A person with B positive blood will have
A. B antigens, antibodies to A, and no Rh antigens.
B. B antigens, antibodies to B, and Rh antigens.
C. B antibodies, antibodies to A, and Rh antigens.
D. A antigens, antibodies to B, and Rh antigens.
E. B antigens, antibodies to A, and Rh antigens.
Answer: E
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Gene inactivation is likely to produce
A. pseudogenes. B. orthologs. C. paralogs. D. homologues. E. horizontal gene transfer (HGT).
DNA polymerases used in PCR
A. must remain active at very cold temperatures. B. include Taq polymerases and Vent polymerase. C. use an RNA template to make complementary DNA. D. are labeled with fluorescent dyes.
Before photosynthetic cells became abundant, were not widespread.
A. cells using aerobic respiration B. chemoautotrophs C. cyanobacteria D. heterotrophs E. cells using anaerobic respiration
The presence of more than two alternative forms of a given gene would be called ________
A) alternation of generations B) hemizygosity C) multiple alleles D) codominance E) incomplete dominance