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Gene repressor proteins which inhibit the transcription of particular genes in eukaryotes also exist. They may act by binding either to control parts within the promoter region near the gene or at sites located a long distance away from the gene, called as silencers. The repressor protein should inhibit transcription directly. One instance is the mammalian thyroid hormone receptor that, in the absence of thyroid hormone represses transcription of the goal genes. Furthermore, other repressors inhibit transcription by blocking activation. This can be get in one of several ways: by blocking the DNA binding site for an activator protein, through binding to and masking the activation domain of the activator factor, or by forming a non-DNA binding complex with the activator protein. Several instance of every mode of action are known.
In many countries of Asia biomass contributes l argely as a source of primary energy. People in rural areas at the peripheries of forests, continue to collect fuel wood from adjace
Which one of the following is one of the characteristics of a biological community? 1. Stratification 2. Natality 3. Mortality 4. Sex-ratio Stratification
International support to control HPAI and other TADs In 2008, a new global approach called "One World, One Health" was defined by the four international technical agencies, i.e
economic importance of the phylum protozoa
- Nuclear membrane disorganize at the beginning of this phase. - Spindle fibers originate and the kinetochore fibers attach to the kinetochore of homologous chromosomes from eac
Milkers’ nodules Milkers’ nodules are caused either by cowpox virus, an orthopoxvirus or pseudocowpox virus, a parapoxvirus. These are relatively benign lesions that occur most co
What would occur to the successive trophic levels in the pyramid of energy if the rate of reproduction of phytoplankton was slowed down? Suggest two factors, which could cause l
An enzyme isolated from a mutant bacterium grown at 20 degrees celsius works in a test tube at 20 degrees celsius but not at 37 degrees celsius( 37 degrees celsius is the temperatu
Advise on Rest, recreation, sleep The patient should take enough rest and get good sleep. Restrict the visitors so that the patient can get enough rest. Not to strain th
What is the function of the left ventricle? Where does the blood go after leaving the left ventricle? The function of the left ventricle is to get blood from the left atrium an
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