Genetic engineering started with ____
a. bacteria
b. viruses
c. fungi
d. plants
e. animals
ANSWER: a
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Fall leaf color on deciduous trees is a result of
A. the production of more accessory pigments because of the cooler temperatures. B. the reduction in the production of accessory pigments. C. cessation of chlorophyll production, which allows the accessory pigments to be revealed. D. the increased angle of the sun during the fall, which reflects more of the accessory pigments.
Which of the following factors likely did NOT contribute to the evolution of distinctive human characteristics relative to Great Apes?
A. alteration of developmental timing so that certain juvenile characteristics are retained in the sexually mature adult B. the evolution of bi-pedalism followed by evolutionary modifications to the skull, pelvic structure, foot and legs C. the evolution of bi-pedalism followed by increasingly sophisticated tool use, cognitive ability, and social organization D. the evolution of the FoxP2 gene associated with more sophisticated language E. the evolution of opposable thumbs followed by increasingly sophisticated tool use
The process that uses short, synthetic, double-stranded RNAs to intentionally bind mRNAs thereby diminishing gene expression is called ________.
A) CRISPR technology B) recombination C) molecular pharming D) antisense technology E) bioremediation
Which is NOT a shared characteristic of
parabasalids and diplomonads? a. heterotrophy b. flagella c. oxygen-poor or anaerobic habitats d. abundant mitochondria e. presence of a pellicle