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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.
The difference b/n algae,bryophyte&pteridophyte?
A population has 350 births per 1000 individuals and 320 deaths per 1000 individuals. 1. what its population growth rate? 2. Intrinsic rate of increase? 3. Doubling time? 4. Derive
Q. Can you explain Non-restrictive ventricular septal defect? In non-restrictive VSD PA pressures are elevated hence VSD gradient is low. Non-restrictive VSD is larger in s
The allele that causes albinism (p) is recessive to the allele for normal pigmentation (P). A normal woman whose father is an albino marries an albino man whose parents are both no
explane the role of nitrogenase enzyme
Injury Resulting From an Accident Accident was described earlier which meant that accident was a sudden event. However, several legal opinions favored exclusion of suddenness
Explain the Mechanism of Drying? Drying as a mechanism, you will realize, involves the removal of free moisture from the surface and also moisture from the interior of the mate
Phanerophytes - Classes of Life Form The perennating buds in this case are present on erect, negatively geotropic shoots, much above the ground. These buds are naked or least
Substances which are insoluble in a membrane are carried across membrane with concentration gradient by means of a carrier molecule in a process termed as: a) Diffusion. b)
Q. Can you explain Likar System with Electrodes? The 12 lead Mason - Likar system with electrodes is used. The plastic adhesive electrodes has self contained electrode jelly in
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