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Homo erectus first arose about 1.6 million years ago and is believed to have lived for atleast 600,000 years at a time when the transition to Homo sapiens took place. The fosSil finds of Homo erectus indicate several first happenings in the human history. For the first time man became from being an opportunistic scavenger to a cooperative and big game hunter. For the first time he had come to know the use of fire. From being a mere stone scrapper, he became a systematic tool maker. There is evidence to indicate that he had home bases OF campsites from where he operated. And also for the first time we had such fossils from outside Africa, in Eurasia. Homo erectus variously named as Pithecanthropus, Sinanthropus and Atlanthropu.r, first appeared during the pleistocene interglacial period. Natural selection, it appears acted on specific characters which favoured the accumulated wisdom, such as increased body size, increased longivity, symbolic human-style culture, and loss of body heat. The cranial capacity of the pithecanthropine man ranged between 800 C.C. to 1125 C.C. (Fig. 14.9). The later populations of Homo erectus were known as cave man or ape man. The pithecanthropine fossils showed several characters which gave a fair picture of the primitive humans.
Define Recommended Dietary Allowances for Vitamin D? The recommendations of vitamin D are expressed as IU. 1 IU is defined as the activity contained in 0.025 mcg of cholecalci
Define the Structure of D and L isomerism? The prefix D or L are used to refer to the configuration of the carbon next to the primary alcoholic group or in other words, the con
Explain about the Maurice Theory according to corneal transparency. Maurice Theory: The uniform collagen fibrils are arranged in regular lattice pattern separated b
How boron affect the the synthesis of proteins ? Inadequate availability of boron tends to increase the loss of phosphorus from plant roots and also affects the synthesis of pro
Determine the Basic Seven Food Groups - Nutritions? These basic seven food groups are: 1) Cereals and cereal products 2) Pulses (also meat and meat products) 3) Milk and m
How are mutagenic agents related to cancer incidence in a population? Is cancer a disease transmitted to the individual offspring? The exposition of a population to mutagenic a
Explain the Canal Obstruction File work shorter than the normal apical and feel a great resistance to reach true length. a. A retained instrument o Canal calcification b.
Q. Rules of Nomenclature classification? The Rules of Nomenclature prescribed the categories into which plants should be classified. These categories constitute the units of cl
Describe Insulin resistance in Non-conventional Factors ? Insulin resistance refers to a generalized metabolic disorder in which various tissues are resistant to normal levels of
Arrayed library: An individual primary recombinant clones (hosted in the phage, cosmid, YAC, or other vector) which are placed in two- dimensional arrays in microtiter dishes. Eac
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