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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.
Define Nutritional Requirements for Extreme Environments? Human beings have been able to survive and work under extreme environments of almost all regions of the earth, from po
Can you give me an example of the species that crossed a few habitats?
Methods Useful in Self-Incompatibility More specific methods useful in overcoming self-incompatibility are mentioned below 1. Bud Pollination : In Petunia axillaris early
discuss why obelia is considered to be a special organism in zoology
Explain the gradient theoryof experimental embryology
a) Explain what is meant by ovulation. b) How often does it happen in humans? (a) Ovulation is the release of an ovum from a mature follicle in the ovary.
Define Buffers and Buffer Solutions? Solutions containing both weak acid and their salts or solutions containing weak hydroxides and their salts are referred to as buffer solut
Disaccharides can be understood as follows 1.Sugars made up of the two monosaccharides held together by the covalent bond; like sucrose and lactose . 2. Type of sugar (sacch
A Molecule of DNA is 2.17 um long. The ends of the molecule become strongly ionixed: negative on one end, positive on the other. The helical molecule acts like a spring and compres
Q. What is the main nitrogen waste of humans? Human beings excrete largely urea eliminated with the urine.
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