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Embryonic stem cells (ES): These are pleuripotent cells of early embryo (blastocyst) capable of giving rise to all differentiated cells, including germ line cells. Embryonic stem cells (ES) can be cultured maintained and are able to proliferate. The method of producing transgenic mice by genetically modified embryonic stem cells is as follows:
(i) Embryonic stem cell (ES) culture is initiated.
(ii) The ES are transformed and screening is done in PCR analysis.
(iii) Transformed cells can be cultured and inserted into blastocyst, which are then implanted in foster mother.
(iv) Transgenic lines are determined by crosses from founder mice.
a) What does secondary productivity in an ecosystem indicate? b) List any two factors by which productivity is limited in aquatic ecosystems
What is the difference between ulcerative colitis and Crohn's disease? The differences between the two include: I) Anatomic distribution of the inflammatory process: Crohn'
Biomaterial is defined, in the broader sense, as any pharmacologically inert material that is capable of interacting with a living organism without causing adverse reactions either
What is the production of RNA called and what is the enzyme that catalyzes the process? The making of RNA from information included in DNA is called transcription. The enzyme t
How Nutritional status affects the BMR? Under nutrition and starvation are the factors which require consideration. Prolonged under nutrition or starvation causes a reduction o
a) Mention the number of primers needed in each cycle of polymerase chain Reaction (PCR) . Write the role of primers and DNA polymerase in PCR. b) Give the characteristic fea
Q. What are the endocrine glands involved in the menstrual cycle? What are the hormones in action? The endocrine glands that secrete hormones involved in the menstrual cycle ar
Syngamy - Protozoan The two gametes may be morphologically similar (isogametes) or dissimilar (anisogametes). The gametes also vary in form, they may be flagellated or amoeboi
The major component of food is protein. The proteins ingested as part of our diet are not the same proteins required by the body, nor can large molecules be absorbed from the gut.
what is respiration in animals ,its functions ,types of respiration
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