OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Origin of replication in bacteria usually contains
|
|
GC rich sequence
|
|
|
Both AT and GC rich sequence
|
|
|
No particular stretch of sequence
|
|
|
AT rich sequence
|
Explanation:
Detailed explanation-1: -The AT-rich regions in bacterial chromosomal origins of replication are usually located on one side of a cluster of DnaA-box sequences. In case of the plasmid origins, this rule applies to the AT-rich region and the iteron sequences recognized by initiator proteins.
Detailed explanation-2: -Bacterial replication origins carry DNA sequence motifs recognized by DnaA and other proteins, and an AT-rich region named the DNA unwinding element (DUE). Among bacteria however, the presence, relative arrangement, and position of these DNA motifs are not conserved.
There is 1 question to complete.