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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.
Q. Which are the respiratory muscles in mammals? In mammals the muscles that participate in the breathing process are the diaphragm and the intercostal muscles, in respiratory
Define Feeding Options for Premature and LBW Babies? Different workers have tried different method and since all methods are successful, it is dependent on the individual infan
Q. What do you mean by Periodical? A periodical is a publication appearing at regular intervals. Each issue is called a number and collectively these numbers comprise a volume.
Define Signs and symptoms of iron deficiency anaemia? Since the level of haemoglobin is reduced in the blood, it causes paleness (pallor) on certain parts of the body. Initiall
what is affinites of gymnosperm
What is Pulmonary Artery Banding ? Banding of pulmonary trunk is done to reduce pulmonary flow in a baby. It is seldom done for isolated ventricular septa] defect. Multiple mu
What is Portal and Rental Circulation ? The body has other circulation systems that do not return blood directly to the heart. For instance, the blood that drains from the abdo
Q. How does the breathing process correct alkalosis? If the body undergoes alkalosis the respiratory center located in the medulla gets the information and induces the lowering
What does ecological niche of an organism represent? Mention the scientific term used for modified form of reproduction in which seeds are produced without fusion of gametes.
Q Why in few cases is mitosis a synonym of reproduction? In some living beings asexual reproduction occurs by many means binary division, budding, grafting, schizogony, etc. In
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