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Q. What are the main causes of Mutation?
Some mutations take place randomly and spontaneously during process of mitosis or meiosis. Others are caused by mutagenic agents that are environmental or man-made factors that can increase frequency of mutation. Environmental factors like ultraviolet rays of the sun can cause changes in DNA which can result in skin cancer. Cosmic rays from space that penetrate earth's ozone layer are also a cause of mutation. Ionizing radiation like X-rays, gamma rays and nuclear radiation produce free radicals (atoms with unpaired electrons) in the cell which can cause breaks in DNA molecule. Carcinogens are chemical mutagens which cause gene mutations which can lead to cancer. A few instances of carcinogens are asbestos, benzene, some food dyes and PCBs.
Why are the tropical forests also known as stratified forests? In the tropical forests tall trees of several species have their crowns forming a superior layer under which dive
Q. Pain - criteria for endosteal implants? Pain and tenderness are subjective criteria and depend on patient's interpretation of the degree of discomfort. Pain is defined as u
Explain Whipping foam method? Whipping is the most common method used as it forms bubbles by cutting the surface and introducing air into liquid. Repeated action makes the
What are the types of brain?
Question 1: Enlist the applications of programming and encoding in Pharmaceutical industries Explanation on what is programming and encoding in Pharmaceutical industries
What is the effect of physical activity on health? The Surgeon General's report (1996) summarizes the effects of physical activity on health as follows. Overall Mortality: H
Define the Prevention of diseases - Function of Vitamin E? Because of its anti-oxidant function and its role in inhibiting cell proliferation of smooth muscles, vitamin E can b
What is the coelom? To which structures do coeloms give birth? Are all animals coelomate? Coeloms are cavities delimited by mesoderm. Coeloms create the cavities where the inte
differenciate between plasma and serum
Radiology is a medical specialty that employs the use of imaging to both diagnose and treat disease visualised within the human body. Radiologists use an array of imaging technolog
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