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In the last unit we traced the human evolutionary history mostly from a palaeontological viewpoint. Although still fragmentary, the available fossil evidence makes it possible to construct a more or less coherent story of human origin and its development. Besides suggesting a primate ancestory, fossil evidence has indicated various trends in human evolution. Today the modern man is regarded as a climax of the evolutionary process. But several questions are raised as to which direction the human evolution is proceeding now and what direction will it take in the future. Is the be-all and end-all of all the evolutionary process? Or do human beings continue to evolve biologically? It may not be possible to provide a direct answer to these questions since evolution is a long term process and the effects could be visualised only after tens of thousands of years.
Chromium Chromium functions as a component of the glucose tolerance factor, which serves to potentiate the action of insulin. Adding low concentrations (0.02 to 1.0 mg/kg) of c
Explain how many bones in the human face? Ans) 14 bones are present in human face and these bones are known as sepio
REDISCOVERY OF MENDEL'S LAWS (THE BIRTH OF GENETICS) 1. It was in 1900 that three botanist independently rediscovered the principles of heredity already worked out by M
The plasma membrane consists mainly of: 1. Phospholipids embedded in a protein bilayer 2. Proteins embedded in a phospholipid bilayer 3. Proteins embedded in a polymer of
Food borne intoxications are basically food borne illness caused due to ingestion of toxin produced my microorganisms (mycotoxins, bacterial toxins). Natural toxins present in food
What does radial symmetry mean? What is the type of symmetry found in chordates? Which are other phyla of the animal kingdom that present species with radial symmetry? Radial
Obesity a health hazard: The factors of obesity are complex. Obesity is due to over eating and excess of energy intake. The obese child when grows up will be a target
Which are the groups of living beings that form the protist kingdom? The protist kingdom contains protozoans and algae. (Two groups of fungi with same characteristics to protoz
Hiatus Hernia: In this type of hernia, cardiac end of the stomach passes through an abnormally wide oesophageal opening in the diaphragm (see Fig. 2.6). Clinical manifestat
Q. What is Mitral Valve and Coronary Arteries? On the PA view, mitral valve calcification is seen just to the left of the spine, below the position of the aortic valve. The lar
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