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رمزگردانی ژن
Yet, in an example of a positive feedback loop, the gene encoding thyroid hormone receptor p (TRp) is itself directly activated by thyroid hormones.
Moreover, 20E usually inhibits the gene encoding pFTZ-Fl.
The transcription factors encoded by the early genes activate the genes encoding the apoptosis-promoting proteins Hid and Reaper, as well as blocking the expression of the diap2 gene (which would otherwise repress apoptosis).
At the boundary between the dorsal and ventral compartments, the Apterous and Vestigial transcription factors interact to activate the gene encoding the Wnt paracrine factor Wingless (FIGURE 21.16B).
Mutations in genes encoding DNA repair enzymes and factors regulating metabolic rates may be crucial in aging, and the insulin signaling cascade {involving the interplay of metabolism and diet) mediates between fertility and aging.
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