A chromosome's gene sequence that was
ABCDEFG before damage and ABFEDCG
after is an example of
a. inversion.
b. deletion.
c. duplication.
d. translocation.
e. aneuploidy.
A
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SNPs within a gene called FOXO correlate with increased longevity in humans. You are a researcher in a lab and wish to determine if you possess this SNP. Which of the following techniques would allow you to accomplish this?
A. genotyping microarray B. gel electrophoresis C. copy number variants D. Southern blot E. None of the answer options is correct.
Sidney Brenner found bacteriophage T4 point mutants in which a protein was prematurely terminated. The premature termination point of the protein was different in different mutants
When he determined where the protein synthesis terminated for each mutant, in every case the next amino acid of the protein would have been a glutamine, lysine, glutamic acid, tyrosine, or serine. What is the unique similarity of these amino acids or their codons that would play a role in the premature termination of translation in the mutant protein gene? A. Each of the amino acids has an R-group containing an amine, hydroxyl, or carboxyl group. B. Each of the codons for these amino acids contains either U or G. C. Each of the codons for these amino acids could be changed to UAG with a single nucleotide mutation. D. Each of the amino acids is polar and charged.
When a neuron membrane potential goes below its resting value it becomes
a. depolarized. b. hyperpolarized. c. repolarized. d. damaged. e. re-stimulated.
Adaptive zones opened up for the dinosaurs after
a. early dinosaurs evolved a four-chambered heart. b. large fragments from an asteroid or comet hit multiple locations on Earth. c. volcanic eruptions and global climate change during the Cretaceous. d. reptiles became very large in size. e. all of these occurred.