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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.
The one aspect which is not a salient feature of genetic code, is its being: 1. Degenerate 2. Ambiguous 3. Universal 4. Specific Ambiguous
Discuss the role of NADPH in erythrocytes The fragility of erythrocytes is impaired in the absence of NADPH generation due to the deficiency of glucose-6-phosphate dehydrogena
Head - check for size, shape or fontanelles, caput, or any other abnormality. Fontanel - anterior fontanel is diamond shaped having size of 2.5 - 4.5 cms. It close
Q. Why is it significant for chromosomes to be condensed during mitosis and decondensed during interphase? During mitosis the major problem to be solved is the correct separati
Definition of Somatoform Disorders: The term 'Somatoform Disorders' was introduced in the scientific literature by the American Psychiatric Association in the third edition o
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Explain the Predator-Prey Relationships ? The feeding by a population of one species upon members of another species is referred to as predation. Many scientists also consider
(a) What are the intermediate products of anaerobic respiration in an active muscle? (b) Which of them is associated with oxygen debt? (c) In what way is th
Atopic individuals are those who are having abnormal high levels of circulating IgE and more than normal number of oesinophils.
After ovulation:- (a) what structure replaces the Graafian follicle (b) what hormone does it produce? (a) After ovulation, the follicle is replaced by the cor
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