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Explain how early RNA molecules might have been able to respond to natural selection.
Every RNA molecule might have competed with slightly dissimilar RNA molecules for nucleotides. An RNA molecule that was more successful in getting nucleotides would have an advantage, and it would pass that advantage on to the new RNA molecules it formed by replicating.
Preparation - Culture Medium Now that you are familiar with the constituents the preparation of medium is quite simple. Several plant tissue culture media are now available
Ways to adapt to stress Now that you know the nature of stress, let us see what type of strategies plants have acquired to adapt to stress. You know that biological functions
Q. Explain Diseases of pericardium? Pericardium is the sac covering the heart. Pericardium consists of two layers-the visceral pericardium (epicardium) and the parietal pericar
Q. What is Anabolism? Anabolism Anabolism is a process of synthesis or making of larger or complex molecules from smaller molecules. These molecules are of different kinds l
Prevention of perinatal transmission Zidovudine alone, started at 14-34 weeks of gestation and continued in the infant for the first 6 weeks of life, reduced HIV transmission
Q. Treatment and Management of Diarrhoea? You must have realized by now that diarrhoea should not be neglected and must receive prompt medical care to minimize the frequency of
Q. Heavy Metals require for the normal finctioning of our body? Like the foods we consume, our bodies also contain many metallic elements. Most of these metals are actually r
The normal flow pattern cross-mitral valve is a tall E wave where is due to early rapid filling and small A-wave which is due to atrial contraction. E/A ratio >1. Pulmonary
Q. What is the most abundant form under which nitrogen is found in nature? The major abundant nitrogen-containing molecule found in nature is molecular nitrogen (N2). The air i
L e p t o s p i r o s i s It is zoonotic disease characterized by interstitial nephritis, haemolytic anaemia and abortions. E t iology : The disease i
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