DrVirgo
Forum Hero
Topics: 1041
Posts: 3,342
|
43. A bacterium harboring a 15,000-base pair (bp) plasmid that encodes resistance to tetracycline and ampicillin segregates mutants that lose resistance to either drug. Each independent mutant plasmid appears to increase in size by approximately 5200 bp. Which molecular event best explains these findings?
A) Formation of plasmid concatemers
B) Formation of pyrimidine dimers
C) Homologous recombination
D) Insertion of a transposon
E) Slip-stranded DNA replication errors
Please Explain your answer! 
Thanks.
___________________
Our greatest glory is not in never falling, but in rising every time we fall.
|
| r_albayunen
Forum Senior
Topics: 0
Posts: 218
|
d?
|
| robin082006
Forum Hero
Topics: 471
Posts: 5,125
|
D
___________________
The Key to Succeed is Patience.
|
| pocas
Forum Elite
Topics: 7
Posts: 169
|
D
|
| DrVirgo
Forum Hero
Topics: 1041
Posts: 3,342
|
I agree with D as well.
Can we compare C and D?
How do bacterial usually gain resistance genes? Conjugation, transformation, or transduction?
___________________
Our greatest glory is not in never falling, but in rising every time we fall.
|
| nadiabarati
|
C
D doesn't make sense!
|
| study_ing
Forum Fanatic
Topics: 180
Posts: 2,511
|
i wud choose c as it seems to be a better explanation...can any one eplain this for sure
___________________
If you yourself are at peace, then there is at least some peace in the world.
|
| truedeam59
Forum Elite
Topics: 29
Posts: 145
|
Could you explain why D does not make sense
|
| docswapna
Forum Senior
Topics: 61
Posts: 229
|
C or D?
|
| Allymd
Forum Senior
Topics: 15
Posts: 118
|
I'd say its D... the mutant plasmid is bigger, so it has to have new material... homologous recombination is an exchange of same amount of genetic material, so the plasmid wont be increased in size... does someone agree??
|
| jsknetsdude
Forum Junior
Topics: 4
Posts: 63
|
Preliminary answer
C) Homologous recombination
Will soon come up with Explanation
___________________
JSK .. O Lord !! Increase my capacity to Absorb knowledge ..
|
|
| |
| | | | | | | | | | | |
