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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 .
Define Importance of Nutrient and Drug Interaction? Certain foods, beverages, alcohol, caffeine, and even cigarettes can interact with medicines. This may make them less effect
These circular orifices are located at the upper ends of the outflow parts of the left and right ventricles respectively. The pulmonary orifice which is 3 cms, is 0.5 cm larger tha
Determine about the Secondary minerals Secondary minerals are formed under conditions of temperature and pressure found at the Earth's surface by the weathering of pre-existi
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
Air pollutants - Effects on plants Particulate matter such as cement, coal, petro coke, dust, and fly-ash screen the light and thus change its quantity and quality. Dust plug
Q. How do schistosomes differentiate regarding sex separation? The Schistosomes are dioecious that is the species has separated sexes, female and male individuals.
Explain the Bioavailability of Thiamin? Thiamin is readily available from the gut from food sources (as thiamin phosphate esters). Drugs and alcohol abuse may interfere with th
CRANIAL NERVES 12 pairs. Total weight 12 gms. Upto amphibian 10 pairs cranial nerves are present. 1, 2, 8, - sensory. 3, 4, 6, 11, 12, motor. 5, 7, 9, 10 - mixed. 3
Aerobic Exercises, Examples and their Do's and Don'ts In the aerobic exercises it requires activities performed for a longer period here we do like to mention certain activitie
Cell Theory The term cell was first used by an English cytologist, Robert Hooke (1665) not for unit protoplasmic masses, but for the well defined and empty compartments, he obs
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