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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.
what is the structure of hiv virus?
MUSCULA R TISSUE Muscular tissue in general develops from the mesoderm of the embryo but the muscles of the iris of the eye and myoepithelial cells of the salivary, mammar
As in several fields of molecular biology studies of E. coli have gives the model for subsequent investigations of transcription in eukaryotic cells. The basic mechanisms by that t
Why is it advantageous to have weak hydrogen bonds among complementary bases and strong covalent bonds among phosphate and Deoxyribose groups in a DNA molecule? The hydrogen bo
Why is a balanced frequency of different alleles of a gene in a population more useful for the survival of that population facing environmental changes? For the trait condition
EVOLUTION OF MAN - Mammals evolved from primitive reptiles (therapsida) in Triassic period, about 210 million years ago. Mammals existed as inconspicuous group of small
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what is the largest nerve centre
Hypoglycaemic coma is a medical emergency. A loss of consciousness is due to low sugar level. Patient should immediately be given biscuits, chocolates, sweet, fruit. If unconscious
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