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Gene targeting in ES cells: In some of the livestock species pro-nuclear injection cannot be used to modify the animals' own genes due to various reasons especially non availability of large number of fertilized eggs and translucent zona. By contrast, the use of embryonic stem (ES) cells in the mouse has enabled us successfully in developing target specific modifications. When these cells with modified DNA are inserted into the early embryo, may contribute to the germline. They undergo a homologous recombination with transferred DNA of interest resulting in to precise and targeted changes in host genome. It is because of combination of these two properties, gene targeting including knockout of some undesired genes in mouse germline is a routine procedure. Despite extensive efforts globally, stable ES cells have not been isolated from livestock and this has constrained many potential applications for germline manipulation. Therefore, it was with some excitement that researchers in the field greeted the news that cloning by nuclear transfer (NT) from cells grown in culture had been achieved as it pointed the way to the development of an alternative, cell-based, system for genetic modification.
Q Does RNA molecule have two polynucleotide chains like the DNA? Only DNA has two polynucleotide chains. The RNA is formed by just one polynucleotide chain.
What are the antigens and the respective antibodies of the ABO blood group system? The ABO blood system contains the erythrocytic antigens A and B that can be attacked by the a
How to Lower the Risk of Drug-Nutrient Interactions? Eat a healthy diet using the food guide pyramid. Follow directions on how to take medication (prescription and ove
what are the disadvantages of protozoa
A calico female has a litter of kitten which includes several calico females a yellow male a couple of yellow females and two black males what is the likely color of the father and
In this session's discussion board provide links to the nutrition information for 2 products. The nutrition information should be the type you find on the side of a food product th
Define the Bioavailability of cyanocobalamin? Vitamin B 12 is widely available. Availability is more from non-vegetarian foods as described earlier under the food sources sec
Results: The risk of isolated aortic valve replacement is 3-4 per cent. The long term survival for 5, 10 and 15years is 75 per cent, 60 per cent and 40 per cent respectively. The
Q. Does the hypophysis- ovaries endocrine axis work in the same way during pregnancy as in non-pregnant women? If pregnancy does not occur how does another menstrual cycle begin?
Diploidy and Haploidy :: In the chromosomal complement given species not all the chromosomes are different from each other .In fact these are in pairs ,i.e. every two chrom
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