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Gene targeting: There is always a debate on gene integration in to the host animal.
It is random gene integration Vs gene targeting. Perhaps most significantly, pro-nuclear injection cannot be used to modify the animals' own genes. By contrast, target modifications to endogenous genes have been achieved earlier in mouse model and now in farm animals also. When introduced into the early embryo these cells contribute to the germline. They can also undergo homologous recombination with transfected foreign DNA so that precise, targeted changes can be introduced. The combination of these two properties means that gene targeting of the mouse germline is now routine, allowing for the deletion, replacement or modification of selected genes. Recombination on either side of the marker gene results in its precise insertion into the chromosome at the same time and delete some or the entire target gene. Precise targeting events are very rare (perhaps 1 in 106 cells) and, therefore special methods must be taken for identifying and selecting the correctly targeted cells.
Poisoning: Poisoning is a common medical emergency in childhood. In children under 5 years of age essentially all poisoning are accidental. Nearly 75 per cent of all poi
why does the removal of extremity of coleoptile prohibit plant growth?
What characteristics distinguish fungi from plants? Fungi contain some unicellular forms, but plants do not; most plants are autotrophic, but all fungi are heterotrophic. Fungi
The involuntary muscle movement is also genetical sk question #Minimum 100 words accepted#
Q. Biological species concept? A biological species as defined by Ernst Mayr are "groups of actually or potentially interbreeding natural populations which are reproductively
What is the destination of the branchial clefts in humans? In humans the branchial clefts situated in the anterior region of the pharynx (also called as pharyngeal clefts) are
Cardiac Tamponade Suspect cardiac tamponade if there is a sudden cessation of chest drainage during immediate post-operative period. The blood is getting collected i
Water Soluble Vitamins B-vitamins are abundant in milk and other feeds. B-vitamins are synthesized by rumen microorganisms, beginning soon after a young animal begins feeding.
M yc ot o xi c osi s There are several types of mycotoxins (toxins produced by the fungi) e.g. aflatoxin, ochratoxin etc. Many species of fungi produce them but Aspergi
What is the effect of physical activity on health? The Surgeon General's report (1996) summarizes the effects of physical activity on health as follows. Overall Mortality: H
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