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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.
VI T AMINS Made up of protein or fat. Vitamins required in minute quantity for normal metabolism and body functions. Vitamins are supposed to be vital amines
What is plutonium reprocessing? Why is it a big environmental issue? Plutonium is the highly radioactive chemical element produced from uranium by nuclear plants. Plutonium can
BLASTUL A TIO N - Type of blastula is blastocyst or trophoblastula. Outer layer of cell becomes flat and form trophoblast or trophoectoderm which receives nutritive ma
What is an etiological agent of disease? An etiological agent of disease is the agent that causes the disease. It might be a living being, substance or environmental fact.
characteristics
similarity between pisces & mammals about dirhynous condition......
Why did it take 150 years for the cell theory to be developed after microscopes were invented? Information about cells could not be understood and organized into a central theo
Thickness and toughness of plant walls are increased by deposition within original cellulose wall, of a substance called as lignin. Process of deposition is called: a) Lignific
What are the uses of microorganisms
negative and positive feedback
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