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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.
Define Inhibitors and Enhancers - absorption of dietary iron? Phytates and fibre from whole grain cereals, tannins and polyphenols in tea, oxalates in green leafy vegetables li
Q What are the three major groups into which mammals are divided? The three groups into which mammals are divided are: monotremes (or prototherian that is platypus), placental
Endothecium - Anther Wall Layers The layer of cells lying immediately next to the epidermis is the endothecium, which is responsible for the dehiscence of the anther. It is us
X-Linked Traits in Humans Let us first examine traits determined by genes on the X-chromosome, or the X-linked traits. The human X chromosome contains many genes that are requi
what year was homo erectus fossils found
Anomalies Related to Oral Cavity: Under these anomalies we will briefly discuss the cleft lip and cleft palate. You must have seen and/or nursed a baby born with a cut on
when the father and the mother of a newborn baby possesses blood group ''O'' +ve,is it possible that the baby can have a blood group ''A'' +ve or ''B''+ve ? Conventionally it shoul
Explain radiation sterilization Various studies have been conducted which show the effect of processing on vitamins especially, thiamine. In one study, which compared the effec
Explain Procedure for Separation of Amino Acids by Paper Chromatography? Now carry out the procedure following the steps given herewith: 1. Take a circular Whatman No 1 filt
Nutrition Assessment The nutritional care process, you would realize, begins with nutritional assessment. Nutrition assessment is the evaluation of an individual's nutrit
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