The below mentioned article provides a close view on the Polyploidy and Evolution of Species. The polyploidy has played an important role in evolution of new varieties and species in nature. Angiosperms and Pteridophytes have very high numbers of polyploid species in nature. More than 35 per cent angiosperms are polyploids. According to Manton (1950), among all the plant groups, [...]
In this article we will discuss about the Insertion of a Foreign DNA Fragment into a Vector. Introduction to the Insertion of a Foreign DNA Fragment into a Vector: The specific section of DNA generated by the action of restriction enzyme is spliced or incorporated into an agent called cloning vehicle. Cloning vehicle is also called vector. Cloning vehicles or [...]
The following points highlight the top three methods of recombinant DNA formation. The methods are: 1. Transformation 2. Transfection 3. Non-Bacterial Transformation. Recombinant DNA Formation: Method # 1. Transformation: The restriction enzyme which causes a break in foreign DNA also causes a staggered cut in the vector DNA at a specific cleavage site. The cohesive ends of vector DNA possess [...]