Deoxyribose has a carbon atom that is not part of the pentose ring. In a nucleotide, what is attached to this carbon?
A. a nitrogenous base
B. a phosphate group
C. one hydrogen atom
D. three hydrogen atoms
Answer: B
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A transgene is best described as
A. hard to destroy once inserted into a genome. B. hard to study because of its transposons. C. created by several of the DNA motifs. D. an inserted foreign gene. E. a result of endosymbiosis.
Which of the following statements is NOT true of
fungal spores? They a. are small. b. are dispersed by air currents. c. are hydrated. d. may germinate to start a new mycelium. e. may be sexual or asexual.
Protists are a diverse group of organisms that are similar in
A) rRNA sequences. B) metabolic type. C) motility. D) ecology. E) None of the answers is correct.
Which of the following statements about genomic DNA libraries is false?
(a) The larger the size of the fragments used to make the library, the fewer colonies you will have to examine to find a clone that hybridizes to your probe. (b) The larger the size of the fragments used to make the library, the more difficult it will be to find your gene of interest once you have identified a clone that hybridizes to your probe. (c) The larger the genome of the organism from which a library is derived, the larger the fragments inserted into the vector will tend to be. (d) The smaller the gene you are seeking, the more likely it is that the gene will be found on a single clone.