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Question: In the cell cycle, many important functions occur. What important event that is related to cell division occurs during the S phase of the cell cycle?
Question: Discuss why is even weak selection still stronger than drift in very large populations at non-neutral loci?
Using a spectrophotometer set at 400 nm, an absorbance reading of 0.050 was obtained for a solution of p-nitrophenol at pH 6.5. The molar extinction coefficient of p-nitrophenol 21500 M-1cm-1 and the pka for p-nitrophenol is 7.
Unexpectedly, a missense mutation found in a protein-coding gene is no longer causing problems for the cell due to the presence of this mutant tRNA. Before the missense mutation in the protein-coding gene, what was the unique encoded amino acid.
Gene frequencies for the ABO alleles vary geographically. For example the I^A allele makes up nearly 50 percent of the genes for blood type among Australian Aborigines, about 25 percent in Central Asian populations,
How a biologist would explain how ability to run fast evolved in cheetahs, assume their ancestors would only run 20 miles per hour. How various total depurinations in your body each day.
Examine the nature of water and how its unique chemical properties impact water regulations in plants. Elucidate the structure and function of the leaf to water regulation.
An activity of the 1000 Bq of a class-W aerosol (AMAD = 1 micrometer) is inhaled in the single intake:In accordance with the ICRP-30 model for respiratory system state the initial activity deposited in the compartment e.
32P is an unstable isotope of phosphorus that has a half-life of 14.29 days. Atoms of this isotope undergo beta decay in which a neutron decays into a proton and an electron.
A plasmid digest with BamHI produced 2 kb and 4 kb fragments. Digest of a plasmid with HindIII produced 6 kb fragment. Double digest with both enzymes produced 1 kb, 2 kb and 3 kb fragments. Sketch a plasmid map.
Cyanide binds to complex IV of the electron transport system, preventing the reduction of oxygen to water. Explain the ultimate effects of cyanide on electron transport, oxygen consumption, and ATP production. How can these in turn affect a person.
Two intracellular molecules A and B are continually synthesised at a constant rate of 1000 per molecule per cell. Each molecule of A survives an average of 100 seconds. While each molecule of B survives an average of 10 seconds.
throughout an experiment utilizing potatoes and the enzyme catalase, the heated potated exhibited less gas production when exposed to hydrogen peroxide. Explain why this happened?
sketch the chromosomes of the parents and the F1. analyse interference and say what you think of its significance.
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