11 Questions
What is the term for the combination of DNA from different sources?
Recombinant DNA
Who successfully created the first transgenic animal?
Rudolf Jaenisch
Which company was able to produce somatostatin, a human protein, through genetically modified E. coli?
Genentech
Who, alongside Michael Bevan, successfully created the first transgenic crop, which was tobacco?
Richard Flavell and Mary Dell-Chilton
What is the main purpose of genetic engineering?
The main purpose of genetic engineering is to manipulate the genes of organisms to manifest desired traits.
Who were the scientists credited with the first performance of genetic engineering?
Cohen and Boyer were credited with the first performance of genetic engineering.
What is the major genetically modified crop mentioned in the text and how was it modified?
Bt corn is the major genetically modified crop, and it received a Bt toxin gene (cry1Ab gene) from the soil bacterium Bacillus thuringiensis.
What was a major breakthrough in recombinant DNA technology and how did it impact the applications of this technology?
The discovery of restriction enzymes was a major breakthrough. These enzymes allow the cutting of DNA molecules at specific regions, expanding the applications of rDNA technology to agriculture, pharmaceuticals, and scientific research.
What is the role of tumefaciens in genetic engineering of plants?
It uses the tumor-inducing plasmid of the bacterium to allow the foreign gene to be incorporated into the genome of the host plant.
How does genetic modification of animals differ from genetic modification of plants?
Genetic modification of animals involves the injection of hundreds to thousands of copies of the foreign gene to the zygote, resulting in a genetic mosaic.
What is the continuous effort in recombinant DNA technology and what are its potential applications?
Recombinant DNA technology continuously strives to improve methods in identification, isolation, and introduction of the gene of interest. It also identifies novel applications to address concerns in agriculture, pharmaceuticals, and medicine.
Test your knowledge on the history of genetic engineering, including significant milestones like the creation of the first transgenic organism and key figures such as Cohen, Boyer, Jaenisch, Genentech, Bevan, Flavell, and Dell-Chilton.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
