Some of the strongest opposition to the application of recombinant DNA technology concerns
DNA fingerprinting.
modification of food crops.
correcting gene defects in animals.
sequencing of the human genome.
The Correct Answer is B
A. DNA fingerprinting: DNA fingerprinting is mainly used for identification and forensics, and it generally faces minimal ethical opposition.
B. Modification of food crops: Genetic modification of crops raises public and ethical concerns related to environmental impact, safety, and food labeling.
C. Correcting gene defects in animals: Gene therapy in animals has fewer controversies than food crop modification, though it raises welfare concerns.
D. Sequencing of the human genome: Sequencing the human genome itself has faced limited ethical opposition; concerns are more focused on how the data are used, not the sequencing process.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Conjugation: Conjugation involves direct physical contact (often via a sex pilus) to transfer genetic material from donor to recipient.
B. Transformation: Transformation involves uptake of free DNA from the environment and does not require donor–recipient contact.
C. Transduction: Transduction transfers DNA between bacteria via bacteriophages and does not require direct cell-to-cell contact.
D. Binary fission: Binary fission is the asexual reproduction of a single cell into two daughter cells and does not involve genetic transfer between separate donor and recipient cells.
Correct Answer is C
Explanation
A. Mitosis: Mitosis is a mode of nuclear division characteristic of eukaryotic cells that have a defined nucleus and mitotic spindle; prokaryotes lack a nucleus and do not undergo mitosis.
B. Meiosis: Meiosis is a form of reductive nuclear division associated with sexual reproduction in eukaryotes; prokaryotes do not perform meiosis.
C. Binary fission: Binary fission is the asexual division process used by most prokaryotes, where the cell duplicates its DNA and divides into two genetically similar daughter cells.
D. All of the above: This would imply prokaryotes use mitosis and meiosis as well as binary fission; because mitosis and meiosis are eukaryotic processes, this option is not accurate.
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