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How many different 6-mer sequences of DNA are there? (Hint: There are 16 possible dinucleotides and 64 possible trinucleotides). We can quantify the information-carrying capacity of nucleic acids in the following way. Each position can be one of four bases, corresponding to two bits of information (22 = 4). Thus, a chain of 5100 nucleotides corresponds to 2 X 5100 = 10200 bits or 1275 bytes (1 byte = 8 bits). How many bits of information are stored in a 6-mer DNA sequence?
Explain why do diuretics produce less diuresis than the loop diuretics and why would thiazide diuretic be chosen over the others for the treatment of hypertension?
Plants often produce waxes on the surface of their leaves to prevent dehydration and protect against insects. What structural feature of waxes makes them more suitable for this task than carbohydrates or proteins.
Define the terms: Autotroph and heterotroph. Describe the differences between photoautotrophs and chemoautotrophs and chemoautotrophs and heterotrophs with regard to their energy source and their role in ecosystems. Give examples for each kind of ..
Pheophytin and Ao (a chlorophyll a molecule whose ?max is 690 nm) are the primary electron acceptors of PS II and PSI, respectively.
Calculate the steady state concentration of radon in the huse assume the ambient concentration is negligible. What is the genus of these bacteria.
A young man twenty-one years of age has come into the local health clinic with a hemoglobin of 11.9 gm/dL and a hematocrit of 25 percent.
what are some substances that move through the membrane through facilitated diffusion? what properties do they have in common?
Hardy-Weinberg has 5 major assumptions; however none of these assumptions are ever met by a natural population. Why then, can we use Hardy-Weinberg to test if a population is at equilibrium?
Genetic variation is important in reproducing populations because it allows the population to adapt to changing environments. Those individuals who are genetically best adapted to an environment have a greater tendency to survive and reproduce.
Perform visual comparison of the assigned two putatively related nucleic acid sequences x and y. Indicate in your answer the identities by 1s on match and 0s on mismatches. Also indicate mutations by the scoring indices S for transition and V for ..
Suppose that 2-pigments, red and blue, mix to give the normal wild-type purple color of petunia petals. Separate biochemical pathways synthesize the two pigments.
Describe why you can predict that meiosis gives rise to genetic differences between parent's cells and daughter cells in fewer cell divisions than mitosis does.
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