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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.
Explain about the Zygomycota - Fungi? Fungi belonging to zygomycota are called zygomycetes. Hyphae in this sub-class are coenocytic. Asexual spores develop in sporangia at the
Q. What are the types of chronic gastritis? Gastroscopic observation shows different types of chronic gastritis: 1. Superficial gastritis: gastric mucosa is red, oedematous,
how do humans reproduce?
How are metarterioles different from arterioles? Explain how fenestrated capillaries are different than continuous capillaries in terms of their structure and function.
Q. How does sexual reproduction take place in bacteria? How dissimilar are the modalities of bacterial sexual reproduction? Sexual reproduction occurs when bacteria incorporate
DISORDER S OF THE ADRENAL CORTEX - ( i ) ADDISON'S DISEASE : This disease is caused by the deficiency of mineralocorticoids and glucocorticoids. Its symptoms include l
Explain Increased Fibrinogen Levels and Other Thrombogenic Factors ? Thsombogenesis is an important component in the pathological process of atherosclerosis and so it is not s
Determine the Occurrence of vitamin K Vitamin K is found naturally in plants and vitamin K2 is synthesized by the bacteria in the intestines in humans. In nature, only two nap
Q. Do all the eukaryotic cells have nucleus and/or only one nucleus? There are eukaryotic cells devoid of a nucleus and others with more than one nucleus. Osteoclasts, the cell
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