1 answer

Which of the following is a product that has resulted or improved because of recombinant DNA...

Question:

Which of the following is a product that has resulted or improved because of recombinant DNA technology?
a.   genetically engineered crops
b.   specialized microorganisms
c.   pharmaceuticals such as insulin and human growth hormone
d.   genetically engineered animals
e.   all of the above

The disease Xeroderma pigmentosum results from DNA-repair defects. People with this disease are sensitive to UV light and have atypical skin pigmentation. Thus these people have higher incidences of what other disease?
a.   albinism
b.   skin cancer
c.   X-linked disease
d.   none of the above

Gene therapy involves transferring desired genes into human cells to treat disease. Which of the following is NOT true about this technology?
a.   It involves transfer of genes into reproductive (germline) cells so that the correction is heritable.
b.   Many clinical trials for treatment of a variety of human diseases are underway.
c.   The gene transfer procedures involved are technically difficult.
d.   Safety concerns include the possibility of immune reactions and development of leukemia.
e.   Gene therapy was first successfully implemented in 1990.


Answers

1.

Answer : Option (e) All of the above

Explanation : All the given products - engineered plants, microorganisms, pharmaceuticals, engineered animals have resulted or improved because of recombinant DNA technology.

2.

Answer : Option (b) Skin cancer

Explanation : The DNA damage by UV rays, if not repaired, causes skin cancer.

3.

Answer : Option (a)  It involves transfer of genes into reproductive (germline) cells so that the correction is heritable.

Explanation :  It involves transfer of genes into somatic cells so that the correction is heritable.

.

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