Procedure: 1  Place 100 ml of homogenizing solution in a beaker heat the solution in a water bath until it reaches 60 C. 2  Mince the onion and add to the solution when it has reached 60 C. Stir and let sit for 15 minutes.3  After the heat treatment, immediately place the beaker into an ice bath for 5 minutes. 4  Pour the contents of the beaker into the 5  ... F The phosphate groups on the outside of DNA carry a negative charge. 2  These negative charges are attracted to and are neutralized by cations such as sodium. 3  When sodium is added to DNA it forms a protective shell around it. 4  On the other hand, protein molecules precipitate from solution in the presence of salt.
In general, a rural area or countryside is a geographic area that is located outside cities and the centers of towns.BI defines rural areas as those areas with a population of less than 49,000 (tier -3 to tier-6 cities). It is generally said that the rural areas house up to 70% of Indiaâs population. Rural India contributes a big chunk to Indiaâs GDP by way of agriculture, self-employment, services, construction etc.
In 1935 the Rural Electric Administration (REA) was created to bring electricity to rural areas like the Tennessee Valley. In his 1935 article  Electrifying the Countryside , Morris Cooke, the head of the REA, stated that.lthough nearly 90 percent of urban dwellers had electricity by the 1930s, only ten percent of rural dwellers did. Private utility companies, who supplied electric power to most of the nation's consumers, argued that it was too expensive to string electric lines to isolated rural farmsteads.