the genetic code is specific? A. There can be multiple codons that specify the same amino acid. B. Most organisms use the same, "standard" genetic code. C. Each codon specifies only one amino acid or is a stop codon. D. Some organisms incorporate non-standard amino acids in their proteins. E. Some organisms have only two stop codons. 21. Which of the following DNA molecules would bind to this sequence: 5'-AATTGCCGT-3' ? A. 5'-ACGGCAATT-3'. B. 5'-TTAACGCGA-3'. C. 3'-AAAACGCCA-5'. D. 3'-TTAAGCCGA-5'. E. 5'-TTAACGGCA-3'. 22. If you wanted to measure the level of translation occurring in eukaryotic cells, what would you measure? A. The concentration of tRNA molecules since they are destroyed during translation B. The concentration of mRNA molecules since they increase during translation C. The concentration of double stranded DNA since DNA is covalently linked to RNA during translation D. The concentration of polypeptides in the cytosol since they increase during translation.
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The complementary sequence will have the following base pairings: A with T, T with A, G with C, and C with G. So, the complementary sequence to 5'-AATTGCCGT-3' is 3'-TTAACGGCA-5'. Now, let's compare this complementary sequence with the given options: Show more…
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The following code is for a strand of DNA: DNA 3' A T A T T A C T T T G C A T G G A C T 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 mRNA U A U A A U G A A A C G U A C C U G A tRNA A U A U U A C U U U G C A U G G A C U Amino acid N-Met-Lys-Arg-Thr-C ATAT (1 2 3 4 of the DNA) This is the promoter sequence on the DNA strand (It is not transcribed) NOTE: tRNA represents the anticodon on the tRNA bringing the amino acid to the site of protein synthesis. Using the genetic code, fill in the blanks to complete the strand of DNA shown above. b. Fill in the blanks above to complete mRNA, tRNA, and the sequence of amino acids coded for by this strand of DNA. Identify a nonsense sequence in the completed strand of DNA in "a".
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Refer to the Genetic Code and the 20 Common Amino Acid charts on p 317 Figure 7 of your textbook. The following is the base sequence on one strand of a DNA molecule: AAT GCC AGT GGT TCG CAC A) Give the base sequence of the complementary strand (make sure to separate the DNA and RNA strands into codons i.e. - put a space between every three nucleotides as shown in the initial strand). B) Give the base sequence of this strand of mRNA read from the original DNA strand. C) Using the three base sequence codon, determine what amino acids this mRNA molecule codes for. (Use the Genetic Code)
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The genetic code is based on each amino acid being coded for by a distinctive series of three nucleic acid bases called a codon. The following is a short segment of DNA using the slash symbol $(/)$ to separate the codons for easy viewing: ATC/GTT/GAA/CTG/TAG/GAT/AAA ATC/GTT/GTA/CTG/TAG/GAT/AAA What kind of change has occurred? a. $A$ substitution of $\mathrm{T}$ for $\mathrm{A},$ changing the coding for the third codon b. An addition of $\mathrm{C}$ for $\mathrm{G},$ lengthening the strand and changing every codon past the addition c. A deletion of an $\mathrm{A},$ resulting in a shortening and changing every codon past the detion d. $\mathrm{Nochange}$ has occurred; the same one base was replaced with the same one
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