HORTICULTURE

HORTICULTURE SCIENCE

PLANT BIOTECHNOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In 1973 Stanley Cohen and Herbert Boyer perform the first successful recombinant DNA experiment using bacterial cells.
A
Separation of Siamese twins.
B
Methods used today to kill microbes in milk.
C
Human Genome Project.
D
Biotechnology revolution.
Explanation: 

Detailed explanation-1: -After preliminary experiments in 1973, the Cohen-Boyer team was able to cut open a plasmid loop from one species of bacteria, insert a gene from different bacterial species and close the plasmid. This created a recombinant DNA molecule‚Äďa plasmid containing recombined DNA from two different sources.

Detailed explanation-2: -In 1973 American biochemists Stanley N. Cohen and Herbert W. Boyer became the first to insert recombined genes into bacterial cells, which then reproduced.

Detailed explanation-3: -Herbert Boyer and Stanley Cohen made the first genetically modified organism in 1973, a bacterium resistant to the antibiotic kanamycin. The first genetically modified animal, a mouse, was created in 1974 by Rudolf Jaenisch, and the first plant was produced in 1983.

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