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Q. In bacteria, genes within an operon are transcribed under the control of a single promoter and the primary mRNA transcript contains sequences which can be translated into each of the independent proteins. In some cases the first gene in the linear sequence appears to be transcribed at a much higher rate than the second and subsequent genes (as in many but not all mRNAs contain the sequences encoded by gene 2 and beyond).
What sort of DNA sequences might be present between the first and second genes to account for this discrepancy on transcript numbers?
A man with a chin dimple and a non dimpled woman produce eight children, all having the chin dimple. Can you be certain of the man's genotype? Why or why not? What genotype is more likely, and why gives reason.
How would you answer to a person who argued that there is nothing to worry about because natural systems, through natural succession, will heal the wounds of human activities and restore the balance of nature.
What series could you use to make a beta barrel with twelve antiparallel strands? Write out one repeat of the sequence as follows: M-(your sequence) 12.
Assume that, during biological research, it became possible to incorporate fully functional chloroplasts into the basal layer of our epidermal skin cells. Knowing the structure and function of chloroplasts, how will this influence our body.
Thirteen-year-old Ryan has begun to challenge many of his parents' values and to express his own set of highly idealistic standards. Compare and contrast the explanations for Ryan's behaviour that would be given by Kohlberg and by Erikson.
Your friend is trying to generate an in vitro system for studying the formation of COPII vesicles. He finds that to get well-organized vesicle budding from artificial membranes, he needs to add the coat proteins, the Sar1 GTP-binding protein.
What are the expected frequencies of three phenotypes (bald, red hair, yellow hair) in the male offspring of this cross? Imagine we observe 50 percent bald, 42 percent yellow hair, and 8 percent red hair. What is a recombination fraction between the ..
Structure and based analysis of proteins
What genetic basis of erminette pattern is suggested? How will you test your hypothesis. In brief compare the progress of an infectious disease through a well-immunized population with its progress during a poorly immunized population.
What specific effects might these toxins have on neuron function. How various plants of each of the four phenotypes do you expect.
What other diseases are thought to be caused by the point mutations? What do point mutations do in those diseases.
How does your individual TRC and those of the average of class compare with the average TRC of the general population as reported by Holt (1968) as 145 for male and 126 for female.
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