nicked circle (Science: molecular biology) During extraction of plasmid dNA from the bacterial cell, onestrand of the DNA becomes nicked. This relaxes the torsional strain needed to maintain supercoiling, producing the familiar form of plasmid...
There are more species of insects than any other species combined. This surely illustrates that insects have the selecti..
This tutorial noted some of the physical and chemical factors that provide the framework of a running water community in..
Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..
Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy. They are..
Lymphocytes are a type of white blood cell capable of producing a specific immune response to unique antigens. In thi..
The sequence of amino acids determines the type of protein. Protein is synthesized according to the sequence of nucleoti..
