Recombinant DNA technology can be most accurately defined as the
use of microorganisms to produce useful products.
selective breeding of organisms to create new combinations of traits.
study of replication and recombination in microbes.
study of genetic expression in microbes.
deliberate modification of the genome of an organism for practical purposes.
The Correct Answer is E
A. Use of microorganisms to produce useful products: This describes biotechnology in general but not specifically recombinant DNA technology.
B. Selective breeding of organisms to create new combinations of traits: Selective breeding involves natural mating, not direct genetic modification.
C. Study of replication and recombination in microbes: This is part of microbial genetics, not recombinant DNA technology.
D. Study of genetic expression in microbes: This focuses on gene regulation, not the deliberate manipulation of DNA.
E. Deliberate modification of the genome of an organism for practical purposes: This defines recombinant DNA technology, which involves inserting, deleting, or altering genes to achieve specific outcomes.
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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 B
Explanation
A. Linear: Linear chromosomes occur in eukaryotes and some bacteria/archaea rarely, but this is not the most common arrangement in prokaryotes.
B. Circular: Most prokaryotic chromosomes are circular DNA molecules lacking membrane-bound nuclei, forming a closed loop that compacts in the nucleoid region.
C. Many separated pieces: Some bacteria have plasmids or multiple replicons, but the typical prokaryotic chromosome is a single circular molecule rather than many separated chromosomal pieces.
D. Single-stranded: Prokaryotic chromosomal DNA is double-stranded, not single-stranded.
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