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Population Growth - Population Parameters and Regulation
The size of a population depends upon the balance between natality and immigration through which individuals are added to a population and mortality and emigration which remove them. If natality and immigration exceed mortality and emigration, population will grow; if these are equal population will remain same size, i.e. static and if death and emigration exceed population will decrease.
Vegetative Development - Differentiation It is referred to as qualitative changes that lead to increased specialisation. For example, the formation of cells and tissues of roo
Genes and Alleles The inheritance of any character can be studied only when thcre are two contrasting conditions, such as yellow versus green seed colour (as observed by Mendel
In the fruit fly Drosophila, a rudimentary wing called "vestigial" and dark body color called "ebony" are inherited at independent loci and are recessive to their dominant wild-typ
What is Electro osmosis ? Electro osmosis : Electroosmosis is the movement of charged molecules along a charged surfaces in response to a voltage difference. For example, e
Movement Movement is another characteristic of living things. It does not always mean locomotion or movement from one place to another. In animals movement is quite obvious. W
Since the visual images are projected in an inverted manner on the retina why don't we see things upside down? As the crystalline lens is a convex spherical lens it forms inver
Reparative Regeneration This type of regeneration, as the name suggests, involves repair of a wound or replacement of a body part removed intentionally or because of injury.
Define requirements of Calcium during pregnancy period? The foetus retains about 25-30 g of calcium, over the course of gestation, most of which is deposited in the last trimes
Q. What is the difference between spermatocyte II and spermatocyte I? The spermatocyte I (2n) undergoes the first division of meiosis (meiosis I) originating two spermatocyte I
How long is the incubation period of the HIV? What is meant by acute AIDS? The incubation period of the HIV (the time interval among the infection and the beginning of the immu
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