In this article we will discuss about:- 1. General Properties of Plasmids 2. Types of Plasmids 3. Replication 4. Incompatibility 5. Library. General Properties of Plasmids: Plasmids are defined as extra-chromosomal genetic elements, occurring chiefly in bacteria and rarely in eukaryotic organisms. In bacteria, plasmids are circular double-stranded DNA molecules which contain genes controlling a wide variety of functions. In [...]
A genome library consists of a large collection of bacterial cultures, in each of which a different segment of the genomic DNA of an organism has been cloned by recombinant DNA technology, so that the entire collection represents its complete genome. The analogy between a library of books and a genome library is based on the fact that both genes [...]
In this article we will discuss about the chemical nature of the genetic material of organisms. The knowledge about the chemical nature of the genetic material was gathered from a number of experimental observations made with bacteria and viruses. These experimental observations led to the conclusion that all cellular organisms have DNA (deoxyribonucleic acid) as the genetic material. Only some [...]