Which of the following is a potential mechanism through which proteins can acquire novel domain architectures over evolutionary time?
A) protein cleavage
B) exon shuffling
C) mutation in a pseudogene
D) duplication and divergence
E) de novo mutation
B) exon shuffling
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If the frequency of allele A is .7, using the Hardy-Weinberg formula, what would the frequency of the heterozygous Aa genotype be?
A. .09 B. .3 C. .42 D. .49 E. It cannot be calculated from the information provided.
The major class(es) of antibiotics that inhibit protein synthesis is/are
A. aminoglycosides. B. tetracyclines. C. macrolides. D. bacitracins. E. aminoglycosides, tetracyclines, AND macrolides.
What characteristics make bacteria like E. coli attractive as model organisms?
A) short generation time, simple genome relative to to that of humans, easily mutagenized, haploid, gene control mechanisms identical to eukaryotes B) short generation time, simple genome relative to to that of humans, easily mutagenized, haploid C) short generation time, genome as complex as that of humans, easily mutagenized, haploid D) short generation time, simple genome relative to to that of humans, easily mutagenized, diploid
Which abiotic factor affects the growth rate of aquatic species?
a. Water temperature b. Water movement c. Dissolved solids d. Salt content