Two different strains of Salmonella differ from each other in that one can ferment sugar "X"...
Two different strains of Salmonella differ from each other in that one can ferment sugar "X" and the other cannot. Describe how each of the above two strains could have been generated at the molecular level.
Homework Answers
Salmonella two different strains could have been generated by horizontal gene transfer . These are transformation, transduction and conjugation.
Transformation:- transformation is a med of genetic transfer
between bacteria in which the donor DNA is cell -free DNA in the
recipient bacterium's immediate environment .once the free DNA
comes in the contact with competent bacteria , liner dsDNA enters
into the cell , but one strand is degraded while the other is
integrated into the chromosome by homologous recombination.
Recipient cells that undergo this process and acquire a new
phenotype as a result start said to be transformed.
Conjugation:- A process in which the genetic information from one bacteria is transferred to other bacteria, in conjugation direct contact between the donor and recipient bactria leads to the establishment of cytoplasmic bridgr between them and transfer of a part or all of the donor genome to the recipient takes place.
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Two different strains of Salmonella differ from each other in
that one can ferment sugar "X"...
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