Gene families are created when
A. viral infections occur.
B. exons converge.
C. Both exon convergence and intron splicing are correct.
D. introns are not removed from the mRNA after transcription.
E. genes duplicate.
Answer: E
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In a pedigree, an affected male would be designated by
A. a shaded circle. B. an open square. C. a square with a line through it. D. an open circle. E. a shaded square.
Cirrhosis of the liver is due to long-term inflammtion in which healthy liver cells are
a. drenched in alcohol. b. replaced by scar tissue. c. converted to bilirubin. d. make excess bilirubin. e. not affected.
Excerpt from Figure 14.8
The accompanying figure represents which chromosomal change?
A. Inversion B. Deletion C. Duplication D. Translocation E. Aneuploidy
Which one of the following terms best applies to the fungus participant in a typical lichen?
A. Ectomycorrhizal fungus B. Mutualist C. Arbuscular mycorrhizal fungus D. Epiparasite