Two bacterial genes are transduced simultaneously.What does this suggest about their proximity to each other within the original host genome?
A) Not a thing-it's highly likely that two separate virus particles were carrying each gene,and that they coinfected the new target cell at the same time,delivering their genetic payloads.This could mean the two original genes might not even be from the same original host cell!
B) It's highly likely that the two genes are located next to each other in the original host cell chromosome.Since transduction relies on either mispackaging of bits of host cell DNA into non-functional virus units,or improper excision of lysogenic phage DNA from a host cell chromosome (carrying parts of the host cell DNA with it) ,the genes must lie close to each other to be transduced into a new cell simultaneously.
C) They must be within five gene lengths of each other,but not necessarily immediately adjacent.If they were immediately adjacent,the transposons that facilitate the transfer of genetic information between the two cells wouldn't be able to 'jump' into them.
D) It doesn't mean anything.Transduction relies on the ability of a cell to take up foreign DNA.It's possible here that the cell has simply taken up two separate bits of DNA at the same time from the surrounding environment.
Correct Answer:
Verified
Q42: Double-stranded DNA enters the recipient cell during
Q45: Each gene mutates at a characteristic frequency.
Q46: Mutations are likely to persist after SOS
Q47: DNA polymerase is able to proofread the
Q49: Which is not true about a crown
Q50: Some bacteria have a higher incidence rate
Q50: Crown gall is caused by a prokaryote
Q52: Is it as effective to take two
Q54: F plasmids and oftentimes R plasmids are
Q55: To maximize the number of thymine dimer
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents