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Nuclear transfer method: Nuclear transfer will extend the range of species in which gene targeting will be possible and thereby provide better models to test treatments for human diseases. The production of Dolly followed by subsequent confirmation in cow and mice successfully established a cloning technology, which have opened the new horizons of application of nuclear transfer technique in production of transgenic animals. Current available technique of pronuclear microinjection of a DNA expression cassette is inefficient and expression levels are unpredictable. Nuclear transfer (cloning) offers an appealing alternative. Hence, one could perform gene targeting in cell lines that is able to donate its nuclei to recipient oocytes. This would allow selection of the most productive cell line showing high expression for conversion into highly productive animals, and all animals will be transgenic. For example, the time from microinjection to a milk producing flock is 3.5 years, if the founder is female, and 2.5 years, if it is male. With somatic cloning this time can be reduced to 1.5 years. This saving of time will be greater with cow. Production of transgenic founder animals by nuclear transfer also uses less than half the number of experimental animals than a pronuclear injection.
The cystic fibrosis allele occurs in European populations with q=0.02, what fraction of this population can be expected to have cystic fibrosis?
What is predatism? Predatism is the ecological interaction in which one individual mutilates or kills another to get food. Predatism is an inharmonious (negative) ecological i
Techniques: operation is done under general endo tracheal anaesthesia. Patient is positioned with the left chest tilted up using a sand bag under left chest. Left antero latera
Why do climbers such beans plants coil up a post?
Blotting method to detect particular one proteins Ans) Western blotting
Class of Crustacea - Branchiura Branchiura involves only around 130 species of ectoparasitic crustaceans living mostly on the integument and gill cavities of freshwater and ma
Gluconeogenesis synthesizes glucose from noncarbohydrate precursors, involving pyruvate and lactate, citric acid cycle intermediates, the carbon skeletons of most glycerol and amin
Primitive Nervous System - Nerve Net A nervous system creates its appearance for the first time in the phylogeny among Cnidaria. In this group the nerve cells make an irregula
Water Reuse And Recycling Are Becoming Much More Common As Demands For Water Exceed Supply. Unplanned reuse occurs as the result of waste effluents entering receiving waters or g
OTHE R GLANDS - (i) Mammary glands - Study of mammary gland is mastology. Modified sweat gland. 4-5 pairs in rabbit. 1 pair in human. In opposum 25 pairs (max.).
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