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What is recombinent DNA? Who constructed it first?

Recombinant DNA, also called chimeric DNA are DNA molecule, that are constructed in the laboratory by genetic recombinant technology i.e by bringing together genetic material from two or more different sources, in order to create a new sequence. 
 Construction of recombinant DNA requires a cloning vector. Cloning vector is a small DNA segment, that is obtained from virus or a plasmid which is used for cloning purpose.
Stanley. N Cohen and Herbert W Boyer can be considered as the inventor of recombinant DNA technology.

 

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Construction of recombinant DNA, in which a foreign DNA fragment is inserted into a plasmid vector.The construction of 1st recombinanat DNA emerged from the possibility of linking a gene encoding antibiotic resistance with a native plasmid(Autonomously replicating circular extra chromosomal DNA)of Salmonella typhimurum. It was 1st constructed by Stanley Cohen and Herbert Boyer in 1972 by isolating antibiotic resistance gene by cutting out a piece of DNA from plasmid which was responsible for conferring Antibiotic resistance.
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