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While various positive control components lie close to the gene they regulate additional can be situated long distances away (sometimes 10-50 kb) either upstream or downstream of the gene shown in the figure. A long-distance positive control series of this type is called as an enhancer if the transcription factor(s) which binds to it enhances the rate of transcription. An enhancer is classically 100-200 bp long and haves several sequence elements which act together to give the whole enhancer activity. When they were first found, enhancers were viewed as a distinct class of control component in which they:
? Over long distances can activate transcription;
? It can be located downstream or upstream of the gene being controlled;
? Are active in moreover orientation with respect to the gene.
Significance of Mitosis 1. Reproduction ; William Bateson 1906 wrote, Whenever I observe a dividing cell under the microscope , I feel as if the original act of c
Q. Patient care plan for hypertensives? - Lifestyle changes: Avoiding smoking, use of tobacco, and excess alcohol intake Physical activity like walking, 4 times a week or 40 mi
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How is the body of gastropods divided? The body of gastropods is separated into three main portions: a) Head, b) The visceral mass and c) Foot.
What are stomata? How do these structures participate in the plant transpiration? Stomata (singular, stoma) are small specialized passages for water and gases there in the epid
Explain the Effect of Deficiency of Vitamin E? Fortunately, vitamin E deficiency in human is extremely rare. This may probably be due to its wide occurrence. in natural foods a
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classifcation of protozoans
Q. What kind of structure is the crystalline lens? What is its function? The crystalline is a converging spherical lens this natural lens has the function to project images of
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