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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.
Classification of plants and animals
Determine Food Sources of Zinc? Zinc is normally associated with the protein and/or nucleic acid fraction of foods. Thus, foods high in proteins are good sources of zinc. Lean
VERTEBR A T E HEART Heart = Cardia. Most important organ of body. Main function is to pump the blood. Study of heart is cardiology. In heart auricles and ventricles pr
A simple osmometer Remove the bottom from a small glass bottle about 2.5 cm in diameter. Fit a one-hole stopper tightly into the bottom and put a 50 cm length of glass tubing o
respiration.
Q. Which animals make tracheal respiration? Is there a blood-like fluid that participates in this process? Arachnids and Insects are the arthropod animals that make tracheal re
Following ways can be used for control of noise pollution: It can be controlled by designing, fabricating and using quiter machines. In heavy industries, sound proof insul
What is Centrioles in cell structure? Most cells of higher organisms contain pairs of cylindrical bodies called centrioles, which help to organize microtubules in cell division
CARE OF RECORDS Patient's/client's records are unquestionably a valuable documents. These should be made on paper of good quality and protected from soiling, and burning. Th
Metabolic Disorders The disease conditions, which are attributable to an imbalance between rates of input of dietary nutrients and the output of production, are defined as pro
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