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Rating of competence skills. 8.2.1. The site of a DNA molecule encoding a polypeptide has the following order of nitrogenous bases: AAAATSTSAAAATATSTTATSTTATATSGA Determine how many

8.2.1. The site of a DNA molecule encoding a polypeptide has the following order of nitrogenous bases: AAAATSTSAAAATATSTTATSTTATATSGA Determine how many codons that contains a DNA fragment Why?

8.2.2. A fragment of the DNA chain has the following sequence: TSGAAATSTAGGTSTATTSAATGTSAGT. How many polypeptide chains are encoded and why?

8.2.3. Studies have shown that 34% of the total number of nucleotides of the RNA, and accounts for guanine, uracil at 18%, 28% cytosine and 20% for adenine. Determine the percentage composition of the nitrogenous bases of double-stranded DNKb replica of which is indicated, and RNA.

8.2.4. What is the length of the portion of DNA encoding the insulin-bull, if it is known that the insulin molecule has 51 amino acids, and the distance between two adjacent nucleotides in DNA is 34 * .

8.2.5. The average molecular weight of about 110 amino acids, and nucleotides 300. What's harder: a protein or gene?

8.2.6.Nucleic acid has a molecular mass of . About how many proteins are encoded in it, if we assume that a typical protein consists iz400 monomers and the molecular weight of 300 nucleotides..

8.2.7. The site of a DNA molecule encoding a portion of the polypeptide has the following structure: ATSTSATAGTTSTSAAAGA. Determine the sequence of amino acids in a polypeptide

8.2.8. The sequence of nucleotides in a gene: TATSGGTTGAAAAGTTSTGATTST encodes amino acids, meth, hair dryer, arg. Set the exons and introns, i- RNA.

8.2.Alpha9.In preparations of DNA isolated from cells of tubercle bacilli, the content of adenine was 15.1% of the total number of bases. Determine the approximate number of guanine, thymine and cytosine in the DNA

8.2.10. In the analysis of the nucleotide composition of DNA of the bacteriophage was observed following the quantitative ratio of nitrogenous bases: A, 23%, 21% T, T-36% C-20%. How can we explain the reason that in this case is not observed the principle of equivalence established by Chargaff?

8.2.11. Determine how many triplets of mRNA contain information about the polypeptide consisting of 900 amino acid residues, and what is the number of nucleotides in the appropriate section of the coding strand of DNA.

8.2.12. Calculate the number of nucleosomes that are required for packaging DNKgena encoding a protein of medium size, consisting of 400 amino acid residues. The value of a piece of NK nucleosomes can be considered equal to 200 pairs of nucleotides.

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