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Explain why ecosystem diversity results in species diversity in a healthy biosphere
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What is the one part of the nucleotide that differs among the other different nucle tides?
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Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.
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Mutations of regulatory elements of developmental genes may have either dominant or recessive effect...
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