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Bacteriophage is a virus which infects a bacterium and which is many times used in molecular genetics experiments as the vector, or cloning vehicle. Recombinant phages can be made in which certain non-essential l DNA is removed and then replaced with the DNA of interest. The phage can accommodate the DNA "insert" of about 15-20 kb. Replication of that virus will hence replicate the investigator's DNA. One would take use of phage l rather than a plasmid if the desired piece of DNA is rather large. Bacteriophage l and M13 are the ones usually used in cloning or subcloning of small genes or DNA fragments in E. coli. Bacteriophage P1 is one which is used for fragments up to 95 Kb in size.
Explain Foaming Properties of proteins To understand the foaming properties of proteins, we need to know some basic aspects of foam foods. Foam foods are usually colloidal disp
Possible mechanisms of increased risk are that hyperhomocystinemia may impair release of nitric oxide form endothelial cells, stimulate proferation of atherogenic smooth muscle cel
Active transport is the transport of the molecules against the concentration gradient (from area of low concentration to area of high concentration) with the help of proteins in t
What are cell kind that form the xylem? What are the major features of those cells? The major cells of the xylem are the tracheids and the vessel elements (these only in angios
Q. Define X-Ray Chest and Coronary Angiography? X-Ray Chest It shows cardiomegaly with left ventricle (LV) and left atrium (LA) enlargement. There may be signs of pulmona
Cytokinins - Apical Dominance Cytokinins are also involved in the regulation of apical dominance. Wickson and Thimann studied the interaction of cytokinins and auxins in contr
heterotrophic mode nutrition plants
The regulation mechanism involves: a) The hormones catecholamines (epinephrine, norepinephrine) and glucagon cause the increase in CAMP levels in cells. This CAMP activates p
What Is the advantage of having a coelomic body cavity
Why does bark often die and break naturally? The bark is the mature periderm of the stem, branches and roots. It dies and breaks when these structures grow and thus the perider
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