A method of genome editing that uses the Cas9 enzyme to identify and cut specific nucleotides from the genome is called ________.
A. CRISPR (clustered regularly interspaced short palindromic repeats)
B. PCR (polymerase chain reaction)
C. ex vivo gene therapy
D. (FISH) fluorescent in-situ hybridization
Answer: A
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V. cholerae and Photobacterium damsela are used to perform quality control on TCBS agar. After overnight incubation, no growth is observed. What is the next course of action?
a. Reinoculate the TCBS agar, and incubate for 36 hours. b. Check the pH to ensure that it is 8.6. c. Reincubate the plates for another 24 hours. d. These two organisms are poor choices for quality control on TCBS agar.
Where in a diatom would you find its yellowish photosynthetic pigment?
A. in the plasma membrane B. in the cell wall C. in the cytoplasm D. in chloroplasts E. in the nucleus
A locus is ____
a. an alternate form of a gene b. the chromosome location of the centromere c. the location of a gene on a chromosome d. a mutation of a gene to an alternate state e. the site of crossing over
With respect to phylogenetic evolution, what does “early branching” suggest in comparison to a “late-branching” taxon?
a. “Early-branching” taxa are extinct ancestors of the “late-branching” taxon. b. “Late branching” suggests the taxon takes longer to adapt to new environments when compared to“early-branching” taxa. c. Taxa that “branched earliest” diverged from others longest ago. d. None of the above is correct.