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A general agreerncnt anlong nll the human evolutionists who may have a very radical philosophical hackground and convictions is that man is the result of an extraordinary evolutionary process. Whereas evidence is available from fossil remains of our ancestors and relatives for the comparative morphology and even anatomy to structure a biological classification, fossil forms do not record the behavioural aspects of man. Essentially the artifacts or the environment in which the fossils were found have to be examined judiciously to draw inferences, relating to the behaviour and cultural aspects. For instance, aggressiveness is a behaviour pattern but this behaviour pattern cannot be fossilised. On the other band, the environment in which the sharp fossile tool, and the fossils of big animals killed by game hunting speak volumes of the aggressive behaviour of the men of the times. The uniqueness of man can be attributed to the instinctive culture that he has evolved. Culture is sum total of a store of information and behaviour patterns. This is inherited by one generation from the other by instruction and learning and by examples and imitation. In other words, although the culture by itself may not be controlled by genes, the capacity tc acquire it is determined genetically. As we discussed in our earlier section, the symbol systems should have played a significant role in the transmission of cultures. Because of this difference that the culture is not transmitted by genes, it is called "superorganic". This notion is not necessarily true. After all it is only the possessors of the human genotype who can acquire, transmit, innovate or transmute culture. In other words, human genotypes are indispensible for culture although the genotypes themselves do not decide which one of the variants of the existing cultures they will acquire. It amounts to saying that there are no genes for Hindu, Islamic, Sikh, American, Chinese or European cultures. The acquiring of a particular culture depends on the environment in which a child is brought up. The same argument can be extended to the concept of the learning and using of a language. Such acts although are decided by genes, the genes do not decide which particular language will be learnt.
Spiral Cleavage - Metazoa In Spiral Cleavage, however, the third and fourth cleavage planes are oblique to the polar axis and the resulting blastomeres do not lie on top of on
EARTHQUAKES An earthquake with its terrible aftereffects is one of the most frightening and destructive phenomena of nature. It can be defined as a sudden movement of
F ALLOPIAN TUBE - Fertilisation occur in it. 10-12 cm long muscular tube. It is supported by double fold of peritonium. It shows 4 regions - (i ) Infundibulum - Bro
Fensom and Spanner Electroosmotic Flow Hypothesis In electroosmosis the ions flow across a membrane in response to electrical gradient. Ions pull along water and other content
DISEASE CONCERNED WITH KIDNEY - 1. Paget's disease - Abnormalities of kidney. 2. Uramia - Increases in quantity of urea. 3. Nephritis - Inflamation in glom
Explain the Treatment of iron deficiency anaemia? Oral iron is the preferred method of treatment of IDA. The dosage is decided depending on the severity of the condition. Gener
Define Proteins, Carbohydrates required for anorexia nervosa? A. Proteins To ensure adequacy, minimum protein intake should equal the recommended dietary intake for age and
Explain Hazard Hazard : A biological, chemical or physical agent that is reasonably likely to cause illness or injury in the absence of its control.
In 1809, Maggiolo described a process of fabricating and inserting gold roots into freshly extracted sockets. The implant was constructed from the three pieces of gold which were s
Describe how the International Astronomical Union defines a planet. Also include why Pluto is no longer considered a planet.
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