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The ability of certain people to taste a chemical called PTC is governed by a dominant allele T, and the inability to taste PTC byits recessive t. If 24% of the population is homozygous dominantand 49% is heterozygous, what is the frequency of t?
In snapdragons flower color is inherited via incomplete dominance. What would the expected colors be (in percentages) if a red snapdragon is crossed with a white snapdragon?
Explain why cells need to receive nutrients (explain what nutrients are & give examples)? Explain why cells need to receive & send messages (briefly explain how cells of the body communicate and why it is important for cells to communicate).
Suppose if an AaBbCcdd male mates with an AaBbCCDD female find the minimum and maximum number of ridge-producing genes possible in one of their children?
Determine which of the following characteristics would support the hypothesis that DNA extracted from a meteorite that fell to earth was from an alien organism?
A student needs 260 ml of buffer at the working concentration (1X) and has a 20X buffer stock. What volume of the 20X stock is required?
c. Which antibiotic(s), if any, will cells be resistant to ifthey have obtained a plasmid containing inserted foreign DNA? d. How would you distinguish recombinant and non-recombinant plasmids by agarose gel electrophoresis.
In peas, the genes a, b, c, d, e and f are linked on chromosome V and in the order given and the map distances are RF(a-b)=7 cM, RF(b-c) = 17 cM, RF(c-d) = 12 cM, RF (d-e) = 14 cM RF(e-f)= 10 cM.
You have a circular plasmid containing 9kb of DNA, and you wish to map its EcoR1 and BamHI sites. When you digest the plasmid with EcoRI and run the resulting DNA on a gel.
give Food preservation methods interfere with the enzyme activity of microbes and prevent them from surviving. How does canning, freezing, pickling and salting interfere with enzyme activity? Ideas are justified.
In which organism will a transposon more easily spread: in an asexual haploid species, or in a sexual diploid species? Explain.
Find an instance of ecological mess that has taken place in Ontario. Outline the history of the problem, what caused it, what is being done to resolve it. What could have been done differently.
How much calcium chloride is needed to make 350 mL of a 50 mM CaCl2 solution? What is the percent composition of this solution.
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