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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.
Define the Concept of Nutrition? Nutrition may be defined as the science of food and its relationship to health. It is concerned primarily with the past played by nutrients in
ORGANIC COMPOUNDS - They are substances having both carbon and hydrogen which are commonly biological in origin. Organic compounds can be micromolecules or macromolecules
Q What are the major morphological features of arthropods? Arthropods present three distinguishing features: they are metameric beings (segmented body), they present articulate
Explain Transfer of Culture from One Liquid Media to another Liquid Media? 1. Inoculating loop is to be held in the right hand. It is sterilized by incineration in the inner bl
what is bowman''s capsule?
FORMATION OF SOIL Evolution of Earth took place five to eight billion years ago when it was a red hot magma (molten rock). It took millions of years for the magma to cool down
Surgical preparation of the bone - drill technique It is essential not to allow the bone to be heated above 47°C during preparation of the site as this will cause bone cell dea
What is the difference among white and red blood cells? What are leukocytes? Red blood cells are erythrocytes and white blood cells are the leukocytes. Leukocytes are cells
Define the Redia Larva? Redia is the third larval stage in the life cycle of F. heputicn. Redia develops from the germ cell Is of the sporocyst and comes out of the sporoc
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