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One of the great science fiction movies so far this century was Alfonso Cuarón's Children of Men (2006), in which infertility threatens humanity with extinction.
(a) P-element hybrid dysgenesis in the fruit fly Drosophila is a frightening illustration of a mechanism by which this might happen in an animal species. Do some background research on this phenomenon in order to explain its molecular basis.
(b) Xenotransplantation has been suggested as a temporary solution of the problem of getting sufficient replacement organs to meet current needs. Pigs have been suggested as a potential source of organs, but most research was halted due to worries about potential risks to not just organ recipients, but to the human species as a whole from porcine endogenous retroviruses. What are endogenous retroviruses, and why do these pose a potential risk to humans.
(c) The CRISPR-Cas system for gene editing has been used to remove all known copies of porcine endogenous retroviruses from a pig cell genome. Does this suggest that xenotransplantation should now proceed (a moratorium on research was in effect until recently)? Explain your reasoning.
SCI 115- Describe the technology. Discuss what it accomplishes. Elaborate on the scientific principles that make this technology possible. Describe how exactly the technology works. Discuss the biological principles that underlie this technology.
What carries genes for antibiotic resistance in prokaryotes?
Each member of a pair of homologous chromosomes separates independently of members of other pairs so results are random, what kind of genetics law is this
Describe the steps in the synthesis of the core portion of N-linked oliogosaccharides in the rough ER.
Was the initial hypothesis supported or refuted? Explain.
Uncle Fred returns from the dermatologist with news that he has skin cancer but he can't remember what type. You examine the lesion to find it is a papule with an ulcer in the center. What type of skin cancer does Uncle Fred heave?
If you cross true-breeding four o' clock plants with red flowers to true-breeding four o' clock plants with white flowers, the resulting heterozygotes have pink flowers. What will be the ratio of red, white and pink flowers if two pink-flowered pl..
In the mythical beast Nechnüm nreyab, horn length is an example of continuous variation, under the control of five genes: A, B, C, D, and E. How many different genotypes encode 20-cm horns? List them all
How does the polarity of charge of a solute molecule affect diffusion across a membrane? (Explain this using what you know about cell membranes.)
Over the long period of time that life has existed on Earth, there have been a number of important or significant innovations including
harris 1966 measured the number of genotypes at the alkaline phosphatase locus in the english population. these are
Conduct an analysis of the Medicaid program of your state and another state from a different region of the country.
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