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NEO DARWINISM OR SYNTHETIC THEORY OF EVOLUTION -
Five factors have been identified as main bases. First is gene mutation, second is chromosomal changes and third is genetic recombination to cause genetic variability. These changes are then acted upon by natural selection and reproductive isolation which guide the population into adaptive channels.
There are also accessory factors like gene migration and hybridization to increase the genetic variability. Lastly the chance factors (genetic drift) in small population is also relevant in the evolution of the new species.
Q. What are some examples of parasitism? The Classical instances are the parasites of humans (host), like the trypanosome that causes Chagas' disease, the HIV virus (AIDS), the
Number of Implants The use of more implants decreases the number of pontics and the associated mechanics and strains on the prosthesis, and dissipates stresses more effectively
The signals for parturition originate from: 1. placenta only 2. placenta as well as fully developed foetus 3. oxytocin released from maternal pituitary 4. fully develop
Explain the Bioavailability of Nicotinic Acid? We have already learnt earlier that niacin is provided in the diet primarily as the pyridine nucleotides-NAD and NADP. In additio
How different are oxyhemoglobin and hemoglobin? Where is it expected to find a higher concentration of oxyhemoglobin, in peripheral tissues or in the lungs? Oxygen-bound hemogl
LEVELS OF PREVENTION AND ROLE OF A NURSE: Caplan describes the levels of prevention as follows: 1) Primary Prevention It is concerned with reduction of incidence
characteristic of spider that makes it the phylum arthropoda?
HlSTORY OF PSYCHIATRY: The earliest treatment of mental disorders was practiced by stone age cave dwellers. For certain mental disorders, the early Shaman or medicine man, t
What are the three categories in which food protein sources can be divided into Protein food sources can be separated into the following three categories: Proteins of pl
Ans) The plant cell wall has structural and protective functions. It plays significant role in the constraint of the cell size, preventing the cell to break when it absorbs much wa
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