What if the DNA is not a double helix, what is its implication? Explain and give example.
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What if the DNA is not a double helix, what is its implication? Explain and give example.
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- How many kilobases of the DNA strand below will code for the protein product?State the properties of the WatsonCrick model of DNA in the following categories: a. number of polynucleotide chains b. polarity (running in same direction or opposite directions) c. bases on interior or exterior of molecule d. sugar/phosphate on interior or exterior of molecule e. which bases pair with which f. right- or left-handed helixIn a DNA Double helix ,why doesn't an A or T form two hydrogen bonds(out of the three possible) with G or C? Explain in detail.
- In a DNA double helix, why doesn't an A or T form two hydrogen bonds (out of three possible) with G or C?What are the features that make the structure of the DNA stable? Explain why the DNA is the genetic material.To create a DNA:RNA hybrid from a short stretch of DNA with the sequence 5'-GGCTAAGTATGCCTAGTAGC-3', design the corresponding RNA sequence. Indicate the sequence in a 5' to 3' manner. What type of helix (A, B or Z) will this double-stranded nucleic acid form?
- What properties of DNA make it especially well suited to serve as the genetic material?What are some reasons why DNA might be double stranded instead of single stranded?Why do higher salt concentrations stabilize the DNA double helix? Or What aspect of the structure of double-stranded DNA destabilizes the helix in the absence of salt?
- The base composition for one of the strands of a DNA double helix is 19% A, 34% C, 28% G, and 19% T. What is the percent base composition for the other strand of the DNA double helix?Which complementary base pair, G-C or A-T, would be hardest to break apart when a double-strandedDNA helix unwinds during cellular processes?How many possible nucleotide sequences are there for a stretch of DNA that is N nucleotides long, if it is (a) single- stranded or (b) double-stranded?