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The lac operon is an brilliant example of negative control or negative regulation of gene expression in which they bound repressor stops transcription of the structural genes. The Positive control or positive regulation of gene expression is when the regulatory protein binds to enhances and DNA the rate of transcription. In that case the regulatory protein is called as an activator. The CAP or CRP included in regulating the lac operon is a good instance of an activator. Thus the lac operon is subject to both positive and negative control.
The effect of gravity on roots Cut various pieces of blotting paper about 8 cm square. Place these among two squares of glass. Place several radish or mustard seeds among the b
What are the situations in which the environment can alter the genotype of an individual? What is the condition for this type of change to be transmitted to the offspring? The
Question 1 Write a short note on the following- Theory of clonal selection Interferons Super antigens Helper T cells Auto immunity Active Immunization
ABA - Dormancy Abscisic acid functions as an antagonist of all three promoters like IAA, GAS and Cytokinins. ABA nullifies the activity of GA, IAA and cytokinin right by a)
a recent topic for my developmental biology assignment
Cytology of Endosperm Normally the young endosperm is triploid as it is formed by the fusion of three haploid nuclei (male gamete + upper polar nucleus + lower polar nucleus)
Q. Describe the Discovery of the Cell? Ans: The discovery that living organisms are composed of cells was made by an Englishman, Robert Hooke, in 1665. Hooke used the light mic
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Ophthalmic Data are limited on the effectiveness of antimicrobial prophylaxis for ophthalmic surgery, but postoperative endophthalmitis can be devastating. Most ophthalmologist
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