Select all of the TRUE statements. (Select all that apply.) The direct movement
ID: 70222 • Letter: S
Question
Select all of the TRUE statements. (Select all that apply.)
The direct movement of DNA between two bacteria of the same generation is called horizontal genetic transfer.
In conjugation, the strand of DNA that is transferred from the donor cell to the recipient cell is single stranded.
The process of conjugation may introduce new genes into the recipient strain, altering its genotype.
A cell with an F factor integrated into the bacterial chromosome is called F+.
An episome is a segment of bacterial DNA that can exist as a plasmid or be integrated into the bacterial chromosome.
During transformation, homologous recombination may occur if the sequence of the introduced DNA has no similarity to the host DNA.
The direct movement of DNA between two bacteria of the same generation is called horizontal genetic transfer.
In conjugation, the strand of DNA that is transferred from the donor cell to the recipient cell is single stranded.
The process of conjugation may introduce new genes into the recipient strain, altering its genotype.
A cell with an F factor integrated into the bacterial chromosome is called F+.
An episome is a segment of bacterial DNA that can exist as a plasmid or be integrated into the bacterial chromosome.
During transformation, homologous recombination may occur if the sequence of the introduced DNA has no similarity to the host DNA.
Explanation / Answer
The transfer of genetic material between two different bacterial cells is called conjugation. Conjugation is a horizontal gene transfer where cells have bridge-like connection. Thus, they show direct cell-to-cell contact. The recipient cell receives a copy of DNA that is not possessed by it. The F-plasmid is an episome where plasmid gets integrated into the bacterial chromosome by homologous recombination.
In transformation technique, the cell directly takes up the exogenous genetic material from its surroundings. In some cases, cell division does not precisely matches with chromosome replication because of presence of two or more copies of any particular region of the chromosome in a bacterial cell. Thus, the cell uses homologous recombinational repair (HRR) technique as DNA repair process for repairing double-strand damages, such as double-strand breaks.
The true statements among the following are 3, 5, and 6.
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