The answer set for this question shows a series of short amino acid sequences obtained from a protein. If you were faced with choosing one of these to design a probe for a particular gene, which would provide the simplest probe or probe set?
(To answer this question, consult the codon table shown in the figure above.)
A) leucine-leucine-serine-leucine
B) leucine-serine-proline-proline
C) proline-methionine-proline-leucine
D) tryptophan-methionine-tryptophan-tryptophan
Answer: D
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The main solutes in the filtrate as it enters the distal convoluted tubule are (select all correct choices):
A. urea. B. electrolytes. C. other wastes. D. amino acids. E. nucleotides.
According to the Hardy-Weinberg principle, which of the following must be true for gene frequencies in a population to remain the same?
A) Mating is random. B) Mutations occur consistently. C) The population is small. D) Natural selection occurs.
A closed or blocked reading frame is __________
a. one that can not be transcribed at all b. a reading frame that is damaged and therefore can not be read c. a reading frame that cannot be translated into protein because termination codons occur frequently d. heterochromatin that can not be transcribed e. None of the above
During tryptophan synthesis in Escherichia coli, the 1:2 attenuator sequence of mRNA is called the pause loop.
Answer the following statement true (T) or false (F)