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health and economic development - linkage and impactit is apparent that the relationship between health and development is a two wayprocess while
health dimensions of developmentit is widely recognised that the health status of the people of a country is as important as their economic
what is a protein-to-protein interaction in other words what 2 proteins must be together for transcription to take place and what 2 proteins for
in phylum colenterata if tissues are present in the body of an organism then why organs are not present as group of tissues makes an
sex-limited traitssex limited traits are traits expressed only in one sex although the genes controlling thcm arc prcscnt as wcll as transmitted to
y-linked traits in humansany gene that occurs exclusively on the y chromosome is said to be holandric and it is not expressed in females such a
x-linked traits in humanslet us first examine traits determined by genes on the x-chromosome or the x-linked traits the human x chromosome
chromosomal type-genetic basis of sex determinationit refers to the condition where the genes involvcd in sex dcterrnincltion arc located on specific
genic type-genetic basis of sex determinationin some organisms certain indepeident genes located on different chromosomes are responsible for sex
effect of environmental factorssome lower organisms though the genetic determiners of the sexes are present the ambient environment plays a decisive
sexual reproductionyou must be aware that reproduction is one of the distinguishing features of living beings reproduction is basically of two types
homozygous and weterozygousin an individual two identical alleles may exist or a given character and hence the individual is referred to as
genes and allelesthe inheritance of any character can be studied only when thcre are two contrasting conditions such as yellow versus green seed
birth of geneticsmodern genetics originated with gregor mendels work it is based on this paper entitled experiments in plant hybridisation published
development of genetics-a historical perspectas systematic study of genetics began answers were sought to questions such asi why are we like our
genetics genetics is the study of heredity it is an ancient discipline at least 4000 years ago in sumeria egypt and other parts of the world farmers
improvement of soil aerationsoil organisms greatly improve soil structure and facilitate aeration root decay leaves the soil riddled with channels
soil mixingthe larger soil organisms are responsible for considerable mechanical mixing and weathering of soil the wedge-like action of roots and
nitrogen fixationnitrogen is an essential constituent of living organisms and there is an inexhaustible supply of it in the atmosphere in the free
decay and nutrient cyclingsoil organisms are the chief agents of decay of organic matter decomposition and mineralisation of organic matter results
influence of associated ionsthe second important factor influencing the plant uptake of a given cation is the effects of the ions held in association
cation saturation and nutrient absorption by plantsthe availability of adsorbed cations is not always so easy as the above explanation might suggest
nutrient availabilityyou have seen that cation exchange plays an important part in nutrient availability to plants cation exchange functions in two
cation exchange capacitythe adsorption of a cation by a colloid nucleus or micelle and the accompanying release of one or more ions held by the
aerationa well-aerated soil is one in which gases are available to plant roots and other soil organisms in sufficient quantities and in proper