Which of the following elements is called “jumping genes”?
A. transposons
B. Plasmid,
C. virulent phages
D. prophage
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Which of the following is a NOT true statement concerning Transposable Genetic Elements ?
A. They move from one location to another within a chromosome.
B. They contain single-stranded DNA.
C. IS may result in insertion mutation.
D. Transposons may confer antibiotics resistance.
Which statement is not right about bacterial genetics materials?
A. RTF in R-plasmid codes sex pili;
B. R-plasmid responsible for drug-resistance;
C. All R plasmids are conjugative plasmid.
D. R-plasmid carries R determinants.
A plasmid is:
A. extrachromosomal DNA which closed circular double stranded molecule.
B. a molecule of RNA found in bacterial cells
C. distinguished from a chromosome by being circular
D. a structure in bacterial cells formed from plasma membrane
Which statement about bacterial chromosome is not right?
A. It is a circular, double stranded DNA molecule
B. It is haploid genome.
C. It is supercoiled and tightly packaged in the nucleoid.
D. It is a linear, long DNA molecule in the nucleoid.
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