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DIVISION PHASE OR MITOSIS (M- PHASE)
Cell division was first observed by Naegeli 1842 in plant cells ,but thoroughly described by Eduard strasburger 1875. Fleming 1879 described . it in animals cells. The term mitosis was given to it by Fleming 1880. Since the most vital significance of mitosis is a precise duplication of genetic material and the latter resides in the nucleus it is advisable to divide the whole process into nuclear division (= Karyokinesis) and cytoplasmic division. Sequentially all changes undergone by a cell during mitosis are divisible in four main phases , viz prophase, metaphase, anaphase and telophase .
Which of the following is NOT required to determine equilibrium potential of a particular ion? Select one: size of the ion valence of the ion concentration gradient for
Recovery of tar: the coke oven gas coming out from ovens is passed through a tower where liquid ammonia is sprayed. The tar and dust are removed and then recovered. Recover of
Woodland Stage - Hydrarch When the lowland has been built up to an extent where the soil is saturated perhaps only in spring and early summer, certain species of shrubs and tr
Q. Is Acetylcholine found in brain? Acetylcholine is found in many parts of the brain having particularly high concentrations in the cerebral cortex, limbic system, basal, foreb
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Consider a properly functioning positive feedback system whose output variable is not equal to plateau at 1:00 AM. At 1:00 AM, A. when the value of threshold is greater than t
what is sperm
Estimate the Results of Tetralogy of Fallot? In excellent centres, the mortality is reported one per cent or less. In infants and babies with low weight, higher mortality is ex
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