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NASA scientists have brought back from Mars a molecule they think is similar to DNA. Just like DNA, it is transcribed into a mRNA-like molecule. Unlike mRNA on Earth, though, it appears to use only three bases (A, C and T). Assuming that proteins were still made from this mRNA molecule and it was thought that 30 Amino Acids existed for this organism, what is the minimum number of bases likely to be in a codon? Explain your answer.
how The information carried by DNA is incorporated in a code
Among various factors that influence enzyme activity, phosphorylation is one of the most common mode of regulation.
the streak-stab technique , used to promote streptolysin activity, is preferred over incubating the plates anaerobically. Why do you think this is so? Compare and contrast what you see as the advantages and disadvantages of each procedure.
A lab is working on drugs that disrupt cell division and have created drugs that inhibit DNA replication in tumor cells. You, being a curious grad student want to test each drug and figure out which DNA replication enzyme it targets.
Briefly describe this repair mechanism and explain how the mechanism knows which strand to repair.
Why are frameshift mutations more likely than missense mutations to result in proteins that lack normal function?
List two benefits to sexual reproduction, List two benefits to asexual reproduction, Explain what monogamy, polygyny, and polyandry are
Based on the Nernst equation, the equilibrium potential for any ion distributed across a membrane is dependent on the internal and external concentrations of the ion,
How is the lac-Z gene and ampicillin resistance exploited.
Determine the coefficient of coincidence and the level of interference. What do theses two terms mean?
In wild petunias, the allele for red flower color ( R ) is dominant over the allele for white flower color ( r ). We sample a population and find 225 plants have white flowers and seventy-five have red flowers.
A plant line with reduced fertility comes to attention of a plant breeder who observes that seed pods often contain a mixture of viable seeds that can be planted to create new plants.
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