November 17, 2008

Evolution of Periodic Table

Periodic table of elements is classifying known elements in the world into groups where the chemical properties are periodic in nature. From an element’s address inside the table, one can easily know its broad properties. Periodic table of elements have been evolving continuously becuase new elements are being discovered regualrly. Following picture depicts the evolution of table.


Metagenomics is described as “the comprehensive study of nucleotide sequence, structure, regulation, and function”. Scientists can study the smallest component of an environmental system by extracting DNA from organisms in the system and inserting it into a model organism. The model organism then expresses this DNA where it can be studied using standard laboratory techniques.