Gene targeting, Biology

Assignment Help:

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.


Related Discussions:- Gene targeting

Define low water permeability across the luminal membranes, A healthy perso...

A healthy person is on a diet that having of very small amounts of water. A. This person will make a large volume of dilute urine with low amounts of dissolved solutes. B. T

Adrenaline and noradrenaline, Both these neurotransmitter strengthen memory...

Both these neurotransmitter strengthen memory when they are released into the blood stream following learning. Stressful events stimulate release of stress hormones from the adrena

Define working of kidney in excretion of zinc in humans, Define working of ...

Define working of Kidney in excretion of zinc in humans? Very small amount of zinc is excreted in the urine (0.3-0.7 mg/day), as most of the zinc filtered by the kidney is reab

Show metabolic rate of aerobic organisms, Q. Why can be the consumption of ...

Q. Why can be the consumption of molecular oxygen indicates the metabolic rate of aerobic organisms? Molecular oxygen (O 2 ) consumption has direct relation to the cell metabol

Deficiency diseases-downer cow syndrome, Downer cow syndrome This syndr...

Downer cow syndrome This syndrome is a common sequel to milk fever. The term is commonly applied to those hypocalcaemic cows that remain recumbent for several hours before bein

Explain about the chemical carcinogens, Explain about the Chemical Carcinog...

Explain about the Chemical Carcinogens? Chemicals have been shown to be carcinogenic. Some are naturally occurring components of plants and microbial organisms. Some are synthe

Aortic valve replacement-types of surgery in ar, Aortic Valve Repla...

Aortic Valve Replacement :  Technique: Surgical technique is not much different from what has already been described for aortic stenosis. Care must be taken to avoid VF

Define the theory or principle of drying, Define the Theory or Principle of...

Define the Theory or Principle of Drying? Drying can be illustrated as the application of heat under controlled conditions to eliminate the majority of the water generally avai

Explain the prevalence of iodine deficiency disorders, Explain the Prevalen...

Explain the Prevalence of Iodine Deficiency Disorders? We can determine the prevalence of IDD by conducting population surveys. Most of the population surveys are based on clin

Describe the mechanism use to alleviate situation, If levels of ATP become ...

If levels of ATP become high in a cell (i.e more than the cell needs at that time), describe the mechanism that the cell would use to alleviate this situation (include the name of

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd