Genetics Exam test quizzes and
answers graded A+
Transformation - ANS✅✅F' factor that has picked up a piece of the bacterial genome.
Conjugation - ANS✅✅Requires at least one nutrient for growth
Transduction - ANS✅✅- E. Coli strain with F Factor integrated into bacterial genome
- Process by which a phage transfers DNA from one host cell to another host cell.
Lytic Cycle - ANS✅✅o Bacterial cell cycle of phage-infected cells resulting in cell lysis and release of
progeny phage.
o Lysogenic Cycle: During which their DNA integrates into the host genome and multiplies along with
it, doing no harm to the host. The integrated copy of the bacteriophage DNA is called a prophage
and a bacterium containing prophage is called a lysogen.
Hfr Chromosome (Hight Frequent recombinant) - ANS✅✅Requires cell to cell contact,
Chromosome containing an integrated F plasmid.
Episome - ANS✅✅An F plasmid that can integrate into the bacterial genome
We isolate nine different mutants unable to make histidine. They map in different locations and by
genetic means we can show there are nine different genes in the pathway. How many enzymes can
we anticipate finding in this pathway? - ANS✅✅9
A bacterium is found that is resistant to the antibiotic gentamicin. The bacterium was isolated in a
hospital where patients were routinely given gentamicin for variety of infections. What was the
pressure that selected for this resistant population? - ANS✅✅Presence of gentamicin in the
environment.
What is the typical Characteristics of bacterial Chromosomes? - ANS✅✅On average a gene occurs
once in every 1000bp
answers graded A+
Transformation - ANS✅✅F' factor that has picked up a piece of the bacterial genome.
Conjugation - ANS✅✅Requires at least one nutrient for growth
Transduction - ANS✅✅- E. Coli strain with F Factor integrated into bacterial genome
- Process by which a phage transfers DNA from one host cell to another host cell.
Lytic Cycle - ANS✅✅o Bacterial cell cycle of phage-infected cells resulting in cell lysis and release of
progeny phage.
o Lysogenic Cycle: During which their DNA integrates into the host genome and multiplies along with
it, doing no harm to the host. The integrated copy of the bacteriophage DNA is called a prophage
and a bacterium containing prophage is called a lysogen.
Hfr Chromosome (Hight Frequent recombinant) - ANS✅✅Requires cell to cell contact,
Chromosome containing an integrated F plasmid.
Episome - ANS✅✅An F plasmid that can integrate into the bacterial genome
We isolate nine different mutants unable to make histidine. They map in different locations and by
genetic means we can show there are nine different genes in the pathway. How many enzymes can
we anticipate finding in this pathway? - ANS✅✅9
A bacterium is found that is resistant to the antibiotic gentamicin. The bacterium was isolated in a
hospital where patients were routinely given gentamicin for variety of infections. What was the
pressure that selected for this resistant population? - ANS✅✅Presence of gentamicin in the
environment.
What is the typical Characteristics of bacterial Chromosomes? - ANS✅✅On average a gene occurs
once in every 1000bp
